Question

6. A and B can do a piece of work in 10 hours, B and C in 12 hours and C and A in 15 hours. How long wa
they take if they work together? How long will each take to complete the work independently?
7. A cistern can be filled by one tap in 4 hours and by another in 5 hours. How long will it take to fill if both
taps are opened together?​

Answer 1

Question 6)↘️

A and B can do a piece of work in 10 hours, B and C in 12 hours and C and A in 15 hours. How long will they take if they work together? How long will each take to complete the work independently?

Answer ↘️

A + B + B + C + C + A = 1/10 + 1/12 + 1/15

2(A + B + C) =

$\frac{6 + 5 + 4}{60}$

15/60

=> 1/4

2(A + B + C) = 1/4

A + B + C = 1/8

so,

it all together = 8 days

Answer 2

Hope it helps.....

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