Subject: General Aptitude · Chapter: Time and Work · Exam: · Marks: · Difficulty:
Twelve children take sixteen days to complete a work which can be completed by eight adults in twelve days. Sixteen adults started working and after three days ten adults left and four children joined them. How many days will they take to complete the remaining work ?
(a)3
(b)4
(c)6
(d)8
(e)None of these
Answer
Answer (as printed): C
Explanation
1 child’s 1 day’s work = ; 192 1 1 adult’s 1 day’s work = . 96 1 1 Work done in 3 days = × 16 × 3 = . 96 2 1 1 Remaining work = 1 − = . 2 2 554 6 4 1 (6 adults + 4 children)’s 1 day’s work = + = . 96 192 12 1 work is done by them in 1 day. 12 1 1 work is done by them in 12 × = 6 days. 2 2 1
Explanation as extracted from the printed page; notation may be imperfect.