There are 50 students in a class. One of them weighing 50 kg goes away and a new student joins. By this the average weight of the class increases by kg. The weight of the new student is |
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a) |
70 kg |
b) |
72 kg |
c) |
75 kg |
d) |
76 kg |

There are 50 students in a class. One of them weighing 50 kg goes away and a new student joins. By this the average weight of the class increases by kg. The weight of the new student is |
|||||||

a) |
70 kg |
b) |
72 kg |
c) |
75 kg |
d) |
76 kg |

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