Question

If 12 boys can earn 240 in 5 days. How many boys can earn rs. 420 in 21 days
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Answer 1

Answer:

21 boys is the answer

Step-by-step explanation:

because 1boy earn ₹20 in 5 day

hope it help you

Answer 2

Given:

12 boys can earn Rs 240 in 5 days.

To Find:

The total number of boys such that they can earn Rs 420 in 21 days are?

Solution:

1. Initially, 12 boys can earn Rs 240 in 5 days,

=> Total amount earned by 12 boys in 5 days = Rs 240,

=> Total amount earned by 12 boys in 1 day = 240/5 = Rs 48.

=> Total amount earned by 1 boy in 1 day = 48/12 = Rs 4.

2. Hence for a total of 21 days,

=> For a total of 21 days, 1 boy can earn a total of 84 rupees.

3. To Earn a total of Rs 420 the total number of boys required are,

=> Number of boys required = 420/84 = 5.

Therefore, 5 boys can earn Rs 420 in 21 days.