Question

A,B and c can do a piece of work in 12days,15days and 10 days respectively. In what time will they all together finish it

Answer 1

Step-by-step explanation:

A can finish work in 12 days

work done by A in 1 day = 1/12

B can finish work in 15 days

work done by B in 1 day = 1/15

C can finish work in 10 days

work done by C in 1 day = 1/10

work done by all A B C in one day = 1/12 +1/15+1/10

=(5+4+6)/60

15/60

1/4

= 4days

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Answer 2

Answer:

4 days

Step-by-step explanation:

$1 \div 12 + 1 \div 15 + 1 \div 10$

$(5 + 4 + 6) \div 60$

$15 \div 60$

$1 \div 4 part of work$

now

in 4 days complete the work