Question

if 15 boys earn rs 1050 in 7 days, what will 20 boys earn in 10 days.

Answer 1

Let take the half of 840 Rupees = 420 rupees 

let take the half of 12 Boys = 6 

= 6 Boys earn in 7 days = 420 Rupees 

= 3 Boys = 210 Rupees . 

so, we add 12 + 3 = 15 Boys 

& we add 840 + 210 = 1050 

15  boys earn 1050 rupees in 7 days 

70 - 1050 = 980 rupees in 6 days 

because 1 boy earn in 7 days = 70 

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