S.3 Maths Percentages problem?

Let original price of ticket = p, original tickets sold = t, so revenue = pt.
When price increases 20% and no. of tickets decreases 10%, revenue = p(1+20%)t(1-10%) = (1.2)(0.9)pt = 1.08pt.
If price increases 25% and no. of tickets decreases 15%, revenue = p(1+ 25%)t(1- 15%)
= (1.25)(0.85)pt = 1.0625pt. So choose the first option for higher revenue.

The picture is too blurry I can't see clear
sorry~~