Question

120 men working 9 hours a day can construct a road in 40 days . how long would it take to construct the same road if 150 men work 6 hours a day on it?

Answer 1

$<font color=red><marquee behavior=alternate>Solution</marquee></font>$

it would take

$= 40 \times \frac{9}{6} \times \frac{120}{150} \\ = 48 \: days$

Answer 2

1 man will complete the job in 16×12 days.

1 man will complete the job in 16×12 days.So, 4 will do in

1 man will complete the job in 16×12 days.So, 4 will do in 4

1 man will complete the job in 16×12 days.So, 4 will do in 412×16

1 man will complete the job in 16×12 days.So, 4 will do in 412×16

1 man will complete the job in 16×12 days.So, 4 will do in 412×16 =48 days.

1 man will complete the job in 16×12 days.So, 4 will do in 412×16 =48 days.Hence, option D is the correct answer