5( 10 M+ 20 W)=3500
Solving we can get:
M=18
W=26
So we can find
Days =1060/6M+4W=5 days
A completes $$ {7\over 10}$$ of work in 15 days, then he completes the remaining work with the help of B in 4 days. The time required for A and B together to complete the entire work is
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