Question

The ratio of boys to girls in a computer class is 5:3. There are 27 girls in the class. How many boys are in the class

Answer 1

5 : 3  = 45 : 27

3/5 = 27/?
3 × 9 = 27   5 × 9 = 45
5 : 3 = 45 : 27

45 boys