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g100num [7]
3 years ago
6

There are 1800 gym members in total, 3/4 are aged 25-59, 1/5 are over 60 and the remainder are under 25, how many members are un

der 25years
Mathematics
1 answer:
siniylev [52]3 years ago
8 0
If x is the number of members under 25, then we have

1800=\dfrac34\cdot1800+\dfrac15\cdot1800+x\implies x=90
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