# Record the daily expenditure, quantities bought and prices paid per unit of the daily purchases of your family for two weeks. How has the price change affected your family?

 Week I Potato Onion TotalExpenditure(Rs) Days Price(per kg)PWI QuantityQWI ExpenditurePWI  QWI Price (per kg)PWI QuantityQWI ExpenditurePWI  QWI Monday 10 1 10 20 1 20 30 Tuesday 9 1 9 19 1 19 28 Wednesday 11 1 11 21 1 21 32 Thursday 12 15 18 20 1 20 38 Friday 8 1 8 19 2 38 46 Saturday 10 2 20 18 15 27 47 Sunday 9 1 9 20 1 20 29

 Week II Potato Onion TotalExpenditure(Rs) Days Price(per kg)PWII QuantityQWII ExpenditurePWII  QWII Price (per kg)PWII QuantityQWII ExpenditurePWII  QWII Monday 9 1 9 20 1 20 29 Tuesday 10 1.5 15 22 1.5 33 48 Wednesday 12 1 12 21 1 21 33 Thursday 10 1 10 19 1 19 29 Friday 11 2 22 18 1 18 40 Saturday 12 1 12 20 1 20 32 Sunday 10 1 10 22 1.5 33 43

The household on Monday of week one (WI) spend Rs 30, by buying 1 kg of Potato and 1kg of Onion at Rs 10 and Rs 20 per kg respectively, whereas, the price of Potato on Monday of the week second (WII) has reduced from Rs 10 to Rs 9 resulting in the reduction in the expenditure incurred by the household. Therefore, we can conclude that the decrease in price leads to decrease in expenditure given the quantity purchased. We can also analyze that the price and quantity purchased by the household shares a negative relationship with each other.

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