7. The average marks of boys in a class is 32 and that of girls is 27. If the
average of all the students is 30, find the percentage of boys in the class
(a) 62% (b) 58%
(c) 56%
(d) 60%
Answers
Answered by
0
Answer:
(a) 62%
Most probably it is the answer
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Answered by
0
Answer:
60%
Step-by-step explanation:
32x+27y=30(X+Y)
32x+27y=30x+30y
2x=3y
x=3y/2
3y/2+y
5y/2
3y/2/5y/2
3/5
3/5×100
60% ans
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