Work-Time Problem MCQ

Logical Reasoning • PSC • Nepal
10 Questions Logical Reasoning • Problem Solving

A does work in 10 days, B in 15 days. Together?
a) Option A
b) Option B
c) Option C
d) Option D

6 days - (10×15)/(10+15)=150/25=6

If 5 men do work in 20 days, 10 men take?
a) Option A
b) Option B
c) Option C
d) Option D

10 days - Inverse proportion: half time

A+B=10 days, A alone=15 days. B alone?
a) Option A
b) Option B
c) Option C
d) Option D

30 days - 1/B=1/10-1/15=1/30

Pipe A fills in 4hr, B empties in 6hr. Both open?
a) Option A
b) Option B
c) Option C
d) Option D

12 hours - Net fill: 1/4-1/6=1/12

3 workers=12 days. 4 workers=?
a) Option A
b) Option B
c) Option C
d) Option D

9 days - Inverse: 3×12/4=9