A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54; at the third, he quadrupled his money and spent $72, and then had $48 left. How much money had he at the start?

Answer 1

$29
29x2=58
58-30=28
28x3=84
84-54=30
30x4=120
120-72=48

Answer 2

$29 no cap