Arithmetic Aptitude Average

• A 1/4
• B 1/35
• C 7/5
• D 8/15
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D

Answer: D

A's work rate is 1/15 of the project per day,
and B's work rate is 1/20 of the project per day.
When they work together,
their combined work rate is 7/60 of the project per day.
Over a 4-day period,
they have completed 7/15 of the project.
The remaining work is therefore 8/15 of the project, which means that they still have 8/15 of the project left to complete

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