Math, asked by anedxbbutt3111, 1 year ago

A and B can do a piece of work in 45 days and
40 days respectively. They began to do the work
together but A leaves after some days and then
B completed the remaining work in 23 days.
The number of days after which A left the work
was:
(a) 11 (b) 7
(c) 9 (d) 12

No answers have been given to this question yet :(

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