A hostel spends Rs.3200 as cost of rice for 20 students for 30 days.If they spend Rs.2400 for 30 students,for how many days will the rice last?
A contractor employed 210 men to build a house in 60 days . After 12 days , he was joined by 70 more men. in how many days willthe remaining worh be finished?
A loaded truck travels 14 km in 25 min. If the speed remains the same,how far can it travel in 5 hrs?
A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same?
plzz help me in this question......
10 men working for 5 hours a day for 6 days mow an area of 5 acres..If there are 8 men working 4 hours a day to mow 4 acres of land, how many days will it take???
A shopkeeper bought locks at a rate of 8 locks for Rs 34 and sold them at a rate of 12 locks for Rs 57. Calculate:
1. his gain percent and
2. the number of locks he should sell to earn a profit of Rs 45. (PLZ answer soon exam approaching)
1. If 72 men can do a piece of work in 25 days, how many days will 30 men do it?
2. If 20 men can reap field in 8 days, then 16 men will reap the same field in how many days?
3. A Train is moving at a uniform speed of 72 Kms. per hour.
a) How far will it travel in 25 minutes? b) Find the time required to cover a distance of 216 Kms.?
4. Walking at a speed of 4 Kms. per hour a man covers a certain distance in 2 hours 4 minutes. If he runs at a speed of 16.5 kmr. per hour, find the time taken by him to cover the same distance?
5. A certain number of men could do a piece of work in 60 days. If there were 8 more it could be finished in 10 days less. Find the number of men in the beginning?
6. If 12 Carpenters can make 480 Chairs in 24 days, how many Carpenters can make 1000 Chairs in 24 days?
Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have been completed in 3 days. Find the time taken by A alone to complete the work?
24 men can complete a work in 16 days. 32 women can complete the same work in 24 days. 16 men and 16 women started working and worked for 12 days. How many more men are to be added to complete the remaining work in 2 days?
A contractor who had a work force of 630 persons, undertook to complete a portion of a stadium in 14 months. He was asked to complete the job in 9 months. How many extra persons had he to employ?
In an election, a candidate got 65% of the total valid votes. 8% of the total votes were declared invalid. If the total number of votes cast was 6,00,000. Find the number of valid votes polled in favour of the candidate. (plz answer its urgent ,exam is approacing)
Question 6:
In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length of the ship is 28 m, how long is the model ship?
Let the length of the mast of the model ship bexcm.
The given information in the form of a table is as follows:
-
Height of mast
Length of ship
Model ship
9 cm
x
Actual ship
12 m
28 m
We know that the dimensions of the actual ship and the model ship are directly proportional to each other.
Therefore, we obtain:
Thus, the length of the model ship is 21 cm.
in the answer why do we leave some units in m and some in cm .is it not mistake to do that.
A train 140m long running at speed of 60km/h. In how much time will it pass a platform 260m long?
a hostel of college having 320 students has a stock of food for 80 days. if 20 students leave the hostel after 20 days , for how many more days will the food last
1200 soldiers in a fort had enough food for 28 days.after 4 days some soldiers were transferred to another fort and thus the food lasted for 32 more days.how many soldiers left the fort.
A hostel spends Rs.3200 as cost of rice for 20 students for 30 days.If they spend Rs.2400 for 30 students,for how many days will the rice last?
A contractor employed 210 men to build a house in 60 days . After 12 days , he was joined by 70 more men. in how many days willthe remaining worh be finished?
A loaded truck travels 14 km in 25 min. If the speed remains the same,how far can it travel in 5 hrs?
A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same?
plzz help me in this question......
10 men working for 5 hours a day for 6 days mow an area of 5 acres..If there are 8 men working 4 hours a day to mow 4 acres of land, how many days will it take???
A shopkeeper bought locks at a rate of 8 locks for Rs 34 and sold them at a rate of 12 locks for Rs 57. Calculate:
1. his gain percent and
2. the number of locks he should sell to earn a profit of Rs 45. (PLZ answer soon exam approaching)
1. If 72 men can do a piece of work in 25 days, how many days will 30 men do it?
2. If 20 men can reap field in 8 days, then 16 men will reap the same field in how many days?
3. A Train is moving at a uniform speed of 72 Kms. per hour.
a) How far will it travel in 25 minutes? b) Find the time required to cover a distance of 216 Kms.?
4. Walking at a speed of 4 Kms. per hour a man covers a certain distance in 2 hours 4 minutes. If he runs at a speed of 16.5 kmr. per hour, find the time taken by him to cover the same distance?
5. A certain number of men could do a piece of work in 60 days. If there were 8 more it could be finished in 10 days less. Find the number of men in the beginning?
6. If 12 Carpenters can make 480 Chairs in 24 days, how many Carpenters can make 1000 Chairs in 24 days?
Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have been completed in 3 days. Find the time taken by A alone to complete the work?
24 men can complete a work in 16 days. 32 women can complete the same work in 24 days. 16 men and 16 women started working and worked for 12 days. How many more men are to be added to complete the remaining work in 2 days?
A contractor who had a work force of 630 persons, undertook to complete a portion of a stadium in 14 months. He was asked to complete the job in 9 months. How many extra persons had he to employ?
In an election, a candidate got 65% of the total valid votes. 8% of the total votes were declared invalid. If the total number of votes cast was 6,00,000. Find the number of valid votes polled in favour of the candidate. (plz answer its urgent ,exam is approacing)
Question 6:
In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length of the ship is 28 m, how long is the model ship?
Answer:Let the length of the mast of the model ship bexcm.
The given information in the form of a table is as follows:
-
Height of mast
Length of ship
Model ship
9 cm
x
Actual ship
12 m
28 m
We know that the dimensions of the actual ship and the model ship are directly proportional to each other.
Therefore, we obtain:
Thus, the length of the model ship is 21 cm.
in the answer why do we leave some units in m and some in cm .is it not mistake to do that.
A train 140m long running at speed of 60km/h. In how much time will it pass a platform 260m long?
a hostel of college having 320 students has a stock of food for 80 days. if 20 students leave the hostel after 20 days , for how many more days will the food last
1200 soldiers in a fort had enough food for 28 days.after 4 days some soldiers were transferred to another fort and thus the food lasted for 32 more days.how many soldiers left the fort.