Multiple Choice Questions

A can do a half of certain work in 70 days and B one third of the same in 35 days They together will...........

Quantitative Aptitude (CUET) Time and work

A can do a half of certain work in 70 days and B one third of the same in 35 days. They together will do the whole work in.

A = 140 days
B = 105 days
1/140 + 1/105 = 7/420 = 1/60
=>60 days

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