# Make me understand this question

Let the total work be x .
Alok completes (4/15)x in 20 minutes .
So , using unitary method he completes(1/15)x in 5 minutes . So he will take 75 minutes for completing x.
Now after Alok finishes (4/15)x Asha joins him .
The remaining work is x - (4/15)x = (11/15)x
Work = Days * People/Work done in one day ( Here in place of day we should use time)
Lets consider Asha completes the work, x individually in A time .
So , (11/15)x = 22 * [(1/75)x + (1/A)x]
On simplifying we get A = 50 minutes (As we considered minutes as the time)
Therefore , Alok and Asha take 75 minutes and 50 minutes respectively to complete the work x or the mathematics set individually .
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Let the total work be x .
Alok completes (4/15)x in 20 minutes .
So , using unitary method he completes(1/15)x in 5 minutes . So he will take 75 minutes for completing x.
Now after Alok finishes (4/15)x Asha joins him .
The remaining work is x - (4/15)x = (11/15)x
Work = Days * People/Work done in one day ( Here in place of day we should use time)
Lets consider Asha completes the work, x individually in A time .
So , (11/15)x = 22 * [(1/75)x + (1/A)x]
On simplifying we get A = 50 minutes (As we considered minutes as the time)
Therefore , Alok and Asha take 75 minutes and 50 minutes respectively to complete the work x or the mathematics set individually .
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