SOLUTION: 54 pupils, 2/3 of them owned space hoppers. 1/4 of those used them to bounce to shops, 1/3 used them to bounce to see their friends and 2/9 only bounced them when their relatives v

Question 412423: 54 pupils, 2/3 of them owned space hoppers. 1/4 of those used them to bounce to shops, 1/3 used them to bounce to see their friends and 2/9 only bounced them when their relatives visited, the rest has used them once only, how many pupils has used them once?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The fraction of 54 pupils that didn't use them once is:

is the LCD and nothing smaller will work

This is the fraction of 54 pupils who DID NOT use it just once,
so the fraction who used it only once is:

The number of pupils who used them only once is

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