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RS Aggarwal Solutions Class 7 Mathematics Solutions for Unitary Method Exercise 9B in Chapter 9 - Unitary Method

Question 2 Unitary Method Exercise 9B

16 men can reap a field in 30 days. How many men must be engaged to reap the same field in 24

days?

Answer:

Solution:-

From the question,

16 men can reap a field in 30 days

1 man can reap a field in = (16 × 30) days … [fewer men, more days]

∴Number of men required to reap a field in 24 days = (16 × 30) / 24

= 20 men … [More men, fewer days]

Hence, 20 men required to reap a field in 24 days.

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