On friday night, nancy spends 1/4th of her weekly allowance at the movies. on saturday, she spends 1/3 of the remaining money at the mall. after spending $12 on sunday morning brunch, nancy has 8 dollars left. what is nancy's weekly allowance? a) $20 b) $26 c) $32 d) $36 e) $40

The $12+8 = $20 that Nancy had before brunch on Sunday was 2/3 of the money she had before her mall trip on Saturday. Then she had $30 before going to the mall. That amount was 3/4 of her weekly allowance. Her allowance was ...

... E) $40

It often works well to work problems like this backward, starting with what you know at the end of the series of transactions.

Let Nancy's allowance be represented by "a". Then

... movie cost = 1/4·a

remaining amount = a - (1/4·a) = 3/4·a

... mall expense = (1/3)·(3/4·a) = (1/4)·a

remaining amount after mall = (3/4)·a - (1/4)·a = (2/4)·a = (1/2)·a

... Sunday brunch = $12

remaining amount after brunch = (1/2)·a - $12 = $8

... 1/2·a = $20 . . . . . . add $12

... a = 2·$20 = $40 . . . . . multiply by 2

step-by-step explanation:

milk=16 large

soda=280 kids

juice box=82 regular

63 soda +63 regular

124 large total

24

step-by-step explanation: