Question

5 machines when operated for 9 hrs each day can harvest a farm in 16 days . How many days would 8 machines take to harvest the same field if each machine is now operated for 10 hours each day?

Answer 1

Solution :

M * D * H =const

M = Machine

D = Days

H = Hours

so,

5 * 16 * 9 = 8 * D * 10

80 * D = 720

D = 9

so it takes 9 days

Hope that helps !!

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Answer 2

9 days.

Step-by-step explanation:

Given that, 5 machines are working on harvesting a farm and they work 9 hours each day and take 16 days to complete the work.

So, 5 machines can harvest a farm in (9 × 16) = 144 hours.

Therefore, 8 machines can harvest the same farm in $\frac{144 \times 5}{8} = 90$ hours.

Hence, if 8 machines work 10 hours each day, then within $\frac{90}{10} = 9$ days they will harvest that farm. (Answer)