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2/5 of the children in Year 8 play the piano.

1/4 of the children in Year 8 play the violin

No child plays more than one instrument.

1) Of the children in Year 8. What fraction do not play the piano or the violin?

Easy i did 1-(2/5+1/4) = 7/20

There are fewer than 50 children in Year 8.

1/2 of the children who do not play the piano or the violin play the drums.

2) How many children are there in Year 8?

Stuck...

Thanks for your help in advance,

Nat