UP TGT Mathematics Commercial Mathematics Test Series - Part 4
A can do a piece of work in 15 days and B in 10 days. They work together for 2 days, then A leaves. In how many more day...
Type: MCQ • Marks: 1
A can do a piece of work in 15 days and B in 10 days. They work together for 2 days, then A leaves. In how many more days will B finish the remaining work?
Options
A. 6
B. 7
C. 8
D. 5
Explanation
In 2 days, A+B do 2(1/15+1/10)=2(1/6)=1/3. Remaining = 2/3. B alone needs (2/3)/(1/10)=20/3 = 6.67 days, so closest exact option is 6.67; using standard option set, answer is 6.67 rounded as 6.67. Correct option value is 6.67.
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