math
posted by jeri .
benjie spent 1/3 of his money on clothes and 1/4 of the remainder on food. if he had 180 pesos left, how much did he have first?

math 
Reiny
original amount  x
after buying clothes , he has 2/3 x left
spends 1/4 of that, leaving him with
(3/4)(2/3)x
so (3/4)(2/3)x = 180
(1/2) x = 180
x = 360
check:
after spending 1/3 of 360 , he is left with 240
1/4 of that is 60 , so that leaves him with 180 
math 
Anonymous
When Lisa’s age was twice May’s age, Sally’s age was 30. When Sally’s age was twice Lisa’s age, May’s age was 21. Given that Sally’s was the oldest among the three persons, find May’s age when Sally was 62 years old.
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