Afia can do her term paper in 15 days which takes Babul 20 days finish. What is the fraction of work left if both Afia & Babul work together for 4 days? <br>

1. Afia can do her term paper in 15 days which takes Babul 20 days finish. What is the fraction of work left if both Afia & Babul work together for 4 days?

[Jamuna Bank PO-2014 : 2014]

1. 1/4

2. 1/10

3. 7/15

4. 8/15

5. none of these

Answer

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