Two classes to collect money. Boys are four sevenths pupils. In time did not pay a quarter of the boys and a sixth of girls, which together mean 12 sinners. How many pupils attend this two classes ?


x =  56


4/7*1/4*x + (1-4/7)*1/6* x = 12

18x = 1008

x = 56

Calculated by our simple equation calculator.

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