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the mean weight of 150 students in a cer...

the mean weight of `150 `students in a certain class is `60kg.` The mean of boys in the class is `70kg` and that of girls is `55 kg.` The number of boys and the number of girls in the class, are respectively

A

`(700)/(3)`

B

`( 500)/(3)`

C

`(400)/(7)`

D

` (300)/(7)`

Text Solution

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The correct Answer is:
A
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