a b and c can do a piece of work in 10, 9 and 15 days. they work together for 2 days and c left the job. in how many days the remaining work will completed by both a and b
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Answered by
0
Answer:
in 38days a b can do the work ok
Answered by
2
Answer:
2 2/19 days
Step-by-step explanation:
let total work = L.C.M(10,9,15)
= 90 units
their efficiency
A's = 90/10 = 9 units/day
B's = 90/9 = 10 units/day
C's = 90/15 = 6 units /day
together they can do = 9+10+6
= 25 units/day
together their 2 days work
= 2 × 25 = 50 units
remaining = 90-50 = 40 units
(A + B) can do 9+10 = 19 units /day
so the remaining work will be completed in 40/19 = 2 2/19 days
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