the ratio of number of girls to number of boys is 1 :2. if the average weight of the boys is 30kg and the average weight of both the boys and girls be 25kg, then the average weight of the girls is
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13 and 27
Explanation:
Total no.of boys : no. of girls = 13:27
27 : 13
harshit1328:
i think it will be 20
answer is 15kg
no 20+30/2=25
this question from mixture and allegations
ok understood thanks
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