A can do a piece of work in 10 days m,B in 12 days and C in 15 days.Al

1.	A can do a piece of work in 10 days m,B in 12 days and C in 15 days.All begin together but A leaves the work after 2 days and B leaves 3 days before the work is finished. How long did the work last.
Answer» Answer: 7 Step-by-step explanation: LCM of (10 , 12 , 15) = 60 Efficiency , A : B : C = 6 : 5 : 4 Now , 4T + (T-3)5 + 26 = 60 => 4T + 5T - 15 + 12 = 60 => 9T = 63 => T = 7 days (ANS.)

A can do a piece of work in 10 days m,B in 12 days and C in 15 days.All begin together but A leaves the work after 2 days and B leaves 3 days before the work is finished. How long did the work last.

Answer»

Answer:

Step-by-step explanation:

LCM of (10 , 12 , 15) = 60

Efficiency , A : B : C = 6 : 5 : 4

Now , 4T + (T-3)*5 + 2*6 = 60

=> 4T + 5T - 15 + 12 = 60

=> 9T = 63

=> T = 7 days (ANS.)