X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in days.
A. 30 days
B. 25 1/2 days
C. 26 2/3 days
D. 26 1/3 days
Answer:C
X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in days.
A. 30 days B. 25 1/2 days C. 26 2/3 days D. 26 1/3 days