naresh can do a piece of work in 15 hours while suresh can do it in 12 hours. how long will both take to do it working together?
Answers
Answered by
2
Answer:
3 hours
please,please,please mark me as brainliest
Answered by
2
Answer:
Solution
verified
Verified by Toppr
Correct option is
C
30 days
A's 1 days' work =
80
1
A's 10 days' work =
80
10
=
8
1
Remaining work =1−
8
1
=
8
7
8
7
of the work is completed by B in 42 days
∴ The whole work is completed by B in
7
42×8
days = 48 days
∴ B's 1 days' work =
48
1
(A + B)'s 1 days' work =
80
1
+
48
1
=
240
3+5
=
240
8
=
30
1
∴ A and B can complete the whole work together in 30 days
Similar questions