A alone can do a piece work in 12days and B can do the same work in 15 days. what part of the work will they do in 3days.
Answers
Answered by
2
Answer:
9/20 ( 0.45) work will be completed in 3 days by A & B together
Step-by-step explanation:
A alone do a piece of work in 12 days
A's 1 day work = 1/12
B Alone do a piece of work in 15 days
B's 1 day work = 1/15
A + B 's one day work
= 1/12 + 1/15
=(1/60) ( 5 + 4)
= 9/60
= 3/20
A+ B's 3 days work will be
= 3 × (3/20)
= 9/20
= 0.45
Answered by
3
A can do Work in=12 days
A 1 day work=1/12
B can do Work in=15 days
B 1 day Work=1/15
If They Work Together
=1/15+1/12
=4+5/60
=9/60
=3/20
(A+B) 1 day work=3/20
(A+B) 3 day Work=3×3/20
=9/20
A 1 day work=1/12
B can do Work in=15 days
B 1 day Work=1/15
If They Work Together
=1/15+1/12
=4+5/60
=9/60
=3/20
(A+B) 1 day work=3/20
(A+B) 3 day Work=3×3/20
=9/20
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