Time And Work Aptitude Pdf Model Questions & Answers, Practice Test for ibps po prelims 2024 2025

Answer: (c)

After 25 days, 35 men complete the work in 12 days.

Thus, 35 men can finish the remaining work in 12 days.

∴ 30 men can do it in ${(12 × 35)}/{30}$ = 14 days, which is 1 day behind.

Answer: (d)

Given 3w = 2M

w = ${2M}/3$

$M_1 d_1 h_1 = M_2 d_2 h_2$

15 × 21 × 8 = 21$(2/3)$ × 6 × d

d = ${15 × 21 × 8 × 3}/{21 × 2 × 6}$

d = 30 days

Answer: (c)

Required no. of binders = ${800×21×15}/{1400×20}=9$

Answer: (a)

In an hour, George and Sonia together can copy

$1/6 + 1/8 = 7/{24}$ of a 50-page manuscript.

i.e. In an hour they together can copy $7/{48}$ of the 100-page manuscript

.i.e. They together can copy a 100-page manuscript in

${48}/7$ hours, i.e. 6$6/7$ hours.

Answer: (d)

(Man + Son)'s one day's work = $1/8$

Man's one day's work = $1/{10}$

⇒ Son's one day's work = $1/8 - 1/{10} = 1/{40}$

∴ Son can do it in 40 days.

Alternate Method :-

Son can do it in $({8 × 10}/{10 - 8})$ = 40 days