Question

12 men can do a piece of work in 20 days.how many men can do the same work in 15 days​

Answer 1

Answer:

x = no of men

y= time to complete work

as x increases y decreases

it is case of inverese variation

x1*y1=x2*y2

12*20=x2*15

12*20/15= x2

4*4=x2

16=x2

16 men's

Answer 2

Answer:

ithink

Step-by-step explanation:

1. 9 days let me show u