1. A can do a work in 15 days and B in 20 days. If they work on it together for
4 days, then what fraction of work is left?
Answers
Answered by
2
Answer:
8/15
Step-by-step explanation:
Given that
take LCM of 15 and 20 as the total amount of work which is 60 units in this case
A can do work in 15 days therefore amount of work done by A in one day is
1day = 60/15 = 4 units
B can do work in in 20 days therefore the amount of work done by B in one day is
1day = 60/20 = 3 units
total total amount of work done in one day=A work of one day + B work in one day(1day) = 4 units +3 units = 7 units
Amount amount of work done in 4 days 4×7 = 28 units
Amount of work left = 60-28=32
Fraction of work left = Amount of work left / Total work
work = 32/60 = 8/15
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1
Answer:
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