A takes contract of doing
landscaping work at the local park.
However, at the end of 20 days, 20%
of the work was still remaining. He
called his friend B for help and
together finished the remaining work
in 3 days. If both A and B can do the
work at equal rate how long would B
have taken to finish the entire work
on his own?
0 43 days
O 37 5 days
40 days
35,5 dans
Answers
Answer:
hi
Step-by-step explanation:
hello bro how r u? good afternoon
Given : at the end of 20 days, 20% of the work was still remaining.
A and B finished the remaining work in 3 days.
To Find : how long would B have taken to finish the entire work on his own
43 days
37.5 days
40 days
35.5 days
Solution:
Let say Total Work is W
Work done by A in a day = A
Work Done of A in 20 Days = 20 A
at the end of 20 days, 20% of the work was still remaining
Work remaining = (20/100)W = 0.2W
Work Done by A = W - 0.2W = 0.W
20A = 0.8W
=> A = 0.04W
Work Done in 3 Days by A = 0.04 x 3 = 0.12W
Work Done by B in 3 Days = 0.2W - 0.12W = 0.08W
0.08W , work done by B = 3 Days
work done by B = 3/0.08
= 37.5
B will take 37.5 days alone to finish the work
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