Question

 If 10 men can construct a house in156 days, how many men are required to construct it in 120 days ?​

Answer 1

Answer:

Step-by-step explanation:

men days

10     156

x        120

Notice that it's in inverse proportion (as the number of men increase, number of days to complete the work decreases)

x = 156*10/120

x = 1560/120

x = 13

(NOTE: Since it's in inverse proportion, like direct variation, we do not   cross multiply. To remember how to multiply easily note that the direction should form a 7 or L inverted or erect. Like in the question, 156*10/120  the mirror image of 7 is being formed)

HOPE IT HELPS!