A completes 7/10 of a work in 15 days. Then he completes the remaining work with the help of B in 4 days. The… · ABC26GN3477
Subject: General Aptitude · Chapter: Time and Work · Exam: S.S.C. 2005
A completes $\frac{7}{10}$ of a work in 15 days. Then he completes the remaining work with the help of B in 4 days. The time required for A and B together to complete the entire work is
(a)$8 \frac{1}{4}$ days
(b)$10 \frac{1}{2}$ days
(c)$12 \frac{2}{3}$ days
(d)$13 \frac{1}{3}$ days
Answer
Answer (as printed): D
Explanation
(A + B)’s 4 days' work = 1 – = . 10 10 3 1 3 (A + B)’s 1 day’s work = × = . 10 4 40 40 1 Hence, A and B together take = 13 days to complete 3 3 the entire work. 1
Explanation as extracted from the printed page; notation may be imperfect.