Participating 83071

One hundred seventy-five school pupils signed up for the school trip. The ratio of boys to girls was 9: 16. In the end, 19 registered students did not come on the trip, so the ratio of the number of participating boys and girls was 9: 17. How many boys and how many girls did not go on the trip?

Correct answer:

x =  9
y =  10

Step-by-step explanation:

n=175 n2=n19=17519=156  A:B=9:16 a:b=9:17  A=9+169 n=9+169 175=63 B=nA=17563=112  a=9+179 n2=9+179 156=54 b=n2a=15654=102  x=Aa=6354=9
y=Bb=112102=10



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