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Math

Question

126
14. A and B can together finish a work
in 30 days. They worked together
for 20 days and then B left. After
another 20 days, A finished the
remaining work. The number of
days, in which B alone can finish the
work is
(1) 54 (2) 60 (3) 50 (4) 48​

1 Answer

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