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# Mensa problem

## Question

A girl has buttons to give away. She gives 1/4 + 10 to Suzie.

From what’s left, she gives 1/5 + 10 to Carol.

Then she gives 1/2 of what’s left +10 to Nancy.

She keeps 5.

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80

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Started with 760 buttons;  Problem is solved by working backward.   X/2 -10 = 5         X - 20 = 10 ,            X = 30.

X/5 -10 =30 ;       X - 50 =150             X = 200

X/4 -10 =200        X -40 = 800     X = 760

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Sent this via email on 30 April

Spoiler
80 started with ...
(1) 80-20-10 = 50
(2) 50-10-10 = 30
(3) 30-15-10 = 5

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