8 persons can earn Rs 6000 in 5 days. What amountwill 3 persons earn in 12 days?

So, 8 persons in 1 day can earn $\frac{6000}{5}$ = Rs.1200

Then, 1 person in 1 day can earn $\frac{1200}{8}$ = Rs.150

Then, 3 persons in 1 day can earn $150\times 3$ = Rs.450

So, 3 persons in 12 days can earn $450\times 12$ = Rs.5400

Therefore, 3 persons can earn Rs.5400 in 12 days.

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