Asked by frank

Kevin spent 1/3 of his money on clothes and ¼ of the remainder on food. If he had ₱180 left, how much did he have at first?
Answered by oobleck
1/3 x + 1/4 (2/3 x) + 180 = x
x = 360

check:
1/3 * 360 = 120
1/4 * 240 = 60
360-120-60 = 180