A) 54
B) 60
C) 50
D) 48
Correct Answer: B
Solution :
[b] (A + B)'s one day work\[=\frac{1}{30}\] \[\therefore \] (A + B)'s 20 day work\[=\frac{20}{30}=\frac{2}{3}\] The remaining work\[=1-\frac{2}{3}=\frac{1}{3}\] According to the question A finished the remaining work in 20 days |
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