Question

Alex spent 25% of his money on a sports drink. Then he spent 25% more on trail mix. He has $9 left. How much money did he start with?

Answer 1

The amount of money that he started was $59.00

BECAUSE:
25+25=50
+9
_____
$59.00

Answer 2

Write it down in a solvable equation.
0.75(0.75x)=9
Multiply
0.5625x=9
Divide.
9/0.5625=16
Alex had 16$ before he bought anything.