Question

4. A can do a piece of work in 20 days while B can do it in 1
the work in 5 days. In what time would C alone do it?
​

Answer 1

Answer:

A alone do work in 20 days.

B alone can do work in 15 days.

A,B,C together can do work in 5 days.

Lets suppose C alone do work in x days.

5

1

=

25

1

+

15

1

+

x

1

75

15−3−5

=

x

1

75

7

=

x

1

,x=

7

75

days

C alone do work in

4

75

days OR 10.71 days.

Step-by-step explanation:

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Answer 2

Answer:

A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. In how many days C alone can do the same work?

Step-by-step explanation:

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