Question

2) For 9 cows, 13 kg 500 g of food supplement are required every day.

In the same proportion, how much will be needed for 12 cows?​

Answer 1

18 kg

Explanation:

We can use a proportion.

First, 13 kg 500 g = 13 kg + 500 g = 13 kg + 0.5 kg = 13.5 kg

Proportion:

9 cows is to 13.5 kg as 12 cows is to x

9/13.5 = 12/x

Cross multiply.

9x = 13.5 * 12

Divide both sides by 3.

3x = 4.5 * 12

Divide both sides by 3.

x = 1.5 * 12

x = 18

Answer: 18 kg