Question

6. 45 men can plough a field in 36 days. How many men will be needed to plough it in 81 days?
a. 20 men
b. 15 men
c. 16 men
d. 24 men

Answer 1

Answer:

c.16 men

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Answer 2

Answer:

a. 20 mens

Step-by-step explanation:

M¹D¹ = Work

-M= members

- D = days or time

45 men can do a work in 36 days

to find total work , 45 * 36 = 1620 work

same work will be done in 81 day i.e., same field

let's take no. of men as X need for 81 day ,

X * 81 = 1620

X = 20 mens