Question

Questions 3
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Answer 1

Given :-

A can do job in 10 days

B can do job in 15 days

A and B both together earn 350 rupees

Solution :-

A can do job in 10 days

Therefore,

A's one day job is = 1 /10

B can do job in 15 days

Therefore,

B's one day job is = 1/15

Now,

Job done by both in one day = 1/10 + 1/15

= 3 + 2 / 30

= 5 / 30

= 1 / 6

Now, earning of 1/6 part of work = Rs350

So, For 1 part of work = 350 * 6

= 2100

Now,

For 1/10 part of work earning = 2100/10 = Rs 210

Therefore,

Earning of 1/15 part of work = 2100/ 15 = Rs 140