0 votes 0 votes $A$ can finish a work in $12$ days and $B$ can do it in $15$ days. After $A$ had worked for $3$ days, $B$ also joined $A$ to finish the remaining work. In how many days, the remaining work will be finished? $5\dfrac{1}{2} \\$ $4\dfrac{1}{2} \\$ $5$ $6$ Quantitative Aptitude nielit2019feb-scientistc work-time + – Lakshman Bhaiya asked Apr 1, 2020 retagged Nov 12, 2020 by soujanyareddy13 Lakshman Bhaiya 13.7k points 718 views answer comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes option C is right s_dr_13 answered Mar 29, 2022 s_dr_13 228 points comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Answer is C 3 days * A’s work + x days * (A+B)’s work = 1 $3*\frac{1}{12}+x * (\frac{1}{12}+\frac{1}{15}) = 1$ $x * (\frac{1}{12}+\frac{1}{15}) = 1 - \frac{1}{4}$ $x = \frac{\frac{3}{4}}{\frac{9}{60}} = 5 days$ neethu_seb answered Dec 14, 2022 neethu_seb 3.3k points comment Share See all 0 reply Please log in or register to add a comment.