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A class has 30 girls more than boys one day one boy is absent the number of years was twice as that of boys find the number of boys and girls |
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Answer» Answer: According to first CONDITION: number of BOYS and number of girls in a class are the same. So suppose no. of boys and girls be X & X, therefore total STUDENT will be 2X. According to second condition: On a day when only ten boys were absent, the number of the girls was twice the number of the boys. So, Boys =X-10 & Girl = 2(X-10) 2(X-10) = X 2X-20=X 2X-X=20 X=20 no. Of boy =no. Of girl=20 So total length class = 20+20=40 student But according to second condition 10 boys were absent. So total length of class on that day = 40–10=30 student Finally answer : 30 student present in class Step-by-step explanation: PLZ MARK AS BRANLIEST AND FOLLOW ME PLZ |
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