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

Question 3 Unitary Method Exercise 9B

45 cows can graze a field in 13 days. How many cows will graze the same field in 9 days?

Answer:

Solution:-

45 cows can graze a field in 13 days

1 cow can graze a field in = (45 × 13) days … [less cows, more days]

∴Number of cows required to graze a field in 9 days = (45 × 13)/ 9

= 65 cows … [More cows, less days]

Hence, 65 cows required to graze a field in 9 days.

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