A physical education class has three times as many girls as boys. During a class basketball game, the girls average 18 points each, and the class as a whole averages 17 points per person. How many points does each boy score on average?

Question

anonymous · Answer

The answer should b come  14, but how ?

anonymous · Answer

shouldn't the answer be 13?

anonymous · Answer

the answer is given bellow this question as per my question set paper , answer given 14 , but how come ?

anonymous · Answer

I got it. I calculated wrong before. Let's simplify the question. Since the ratio of girl:boy is 3:1, it set there are 3 girls and 1 boy. The average is calculated by everyone point sum/number of people. 17(4)=68. Then girls's average is 18 so 18(3)=54. And 68-54=14 so that why the boy's average is 14.

anonymous · Answer

71(4)=68 , and how come 4 over in bracket ,plz explain

anonymous · Answer

R U there ?

anonymous · Answer

yes i can explain. That's multiplying in algebra.

anonymous · Answer

Thanks