# Make me understand this question

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 .