SOLUTION: Please sir I cannot find the answer of this question would you please help me :- The ratio of boys and girls in a class is 5:3 if 20% of the boys an

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Please sir I cannot find the answer of this question would you please help me :- The ratio of boys and girls in a class is 5:3 if 20% of the boys an      Log On


   

Question 1020172: Please sir I cannot find the answer of this question would you please help me :- The ratio of boys and girls in a class is 5:3 if 20% of the boys and 60% of girls have passed in first class what percentage of the class has passed in first class?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
The total quantity of boys and girls is 5+3=8 equal parts.

5%2Aparts%2A%280.2%29=1, how many parts for BOYS in first class;

3%2Aparts%2A%280.6%29=1.8, how many parts for GIRLS in first class;

The class in first class, %28%281%2B1.8%29%2F8%29100%2Apercent.

35%