Question

uncle percy sold t shirts at the show. now he only has 10% of the t shirts he started with. if he has 25 t shirts now , how many did he start with?

Answer 1

He had 250 shirts to begin with.

Let x be the number of shirts he began with.  He has 10%, or 0.10 of the shirts now he had then.  This equals 25:

0.1x = 25

Divide both sides by 0.1:
0.1x/0.1 = 25/0.1
x = 250