Answers

2014-01-15T11:43:24+05:30
Let us keep total number of students as x  50%of students as x%2 and the remaining 50%as x%2  x%2=1%10+1%20+70=1403students total students =x%2+x%2=1403+1403=2806 no of students 10 years old =1%20 of 2806=1403 students are 10 years old
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