the ratio of boys to girls is 7:8 How many boys are there in school if there are 968 girls?

My answer is 581 boys is this correct??

5 answers

No.

Cross multiply and solve for b

7/8 = b/968
I cross multiplied but I used
7/15= b/968
I thought you had to add the ratios or would you only do that if you didn't know the total girls and only knew total students?
You follow your procedure if you know the total number of students. We only know the number of boys.
7/8×968/1=847
968/8=B/7