Question

P can complete a work in 15 days and Q can complete in 10 days . after doing 2 days work together , p fled away . so, in how many days Q will complete the remaining work (from chapter time and work​

Answer 1

The remaining work will be completedly in15 days

Answer 2

Solution

P can complete a work in 15 days.

so, P's one day work = 1

15

Q can complete a work in 10 days.

so, Q's one day work = 1

10

now, (P+Q)'s one day work = 1 + 1

15 10

= 2 + 3

30

= 5

30

= 1

6

so, (P+Q)'s two days work = 1 × 2

6

= 1

3

then, remaining work = 1 - 1

3

= 3 - 1

3

= 2

3

now, let the no. of days in which Q complete the remaining work be x days.

ATQ

1 × x = 2

10 3

=) x = 2 ×10

3

=) x = 20

3

=) x = 6 2 days .

3

Solved.