The ratio 20

The ratio of the boys to the girls is 1:3. There are 20 pupils. How many boys and how many girls are there?

Correct answer:

g =  15

Step-by-step explanation:

b:g=1:3 n=20  n=b+g 3b = g  n=b+3b 20=b+3b  20=b+3 b  4b=20  b=420=5  b=5  g=3 b=3 5=15



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