Question

if 15 person can do a work in 30 days then 30 persons with twice the efficiency

Answer 1

Ans:-7.5

EXPLANATION :-

From this mathematical problem,

we get,

1 unit efficiency × 15 person × 30 days.....(i)

2 unit efficiency × 30 person × X days.......(ii)

According to mathematical theory,

Equating both the equation (i) , (ii)

Or, (1×15×30)=(2×30×X)

Or, 450=60X

Or, 60X=450

So, X=7.5