A, B and C can complete a work in 10, 12 and 15 days respectively. Th…

Question

A, B and C can complete a work in 10, 12 and 15 days respectively. They started the work together. But A left the work 5 days before its completion. B also left the work 2 days after A left. In how many days was the wor…

Accepted Answer

Option C. 7. Answer & Solution Answer: Option C Solution: & C's 3 day's work & = ( 115 × 3 ) & = 1/5 & ( B + C ) 's 2 day's work & = [ ( 112 + 115 ) × 2 ] & = ( 320 × 2 ) & = 310 & Remaining work & = [ 1 - ( 1/5 + 310 ) ] & = ( 1 - 1/2 ) & = 1/2 & ( A + B + C ) 's 1 day's work & = ( 110 + 11…

A, B and C can complete a work in 10, 12 and 15 days respectively. They started the work together. But A left the work 5 days before its completion. B also left the work 2 days after A left. In how many days was the work completed ?

Solution