Question

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

Answer 1

Answers 1days work of -

1.A=1/10

2.B=1/12

3.C=1/15

Let the No. of days a which they all can finish the work=x

1/10 x+1/12x+1/15x=1

6x+5x+4x=1

60

15x=60

=x=4

so, number of day s =4days

Step-by-step explanation:

A's 1 day work = 1/10

Bs 1 day work = 1/12

CA 1 day work =1/15

in 1 day together does = 1/10+1/12+1/15

10×12+12×15+×10

= ___________________

10×12×15

=450/1800

=1/4 hence they can do the work in 4 days

I hope this answers help u