The ratio of boys to girls in Newton International School is 3 to 5. There are 120 boys in the school. How many girls are there?

1 Answer
Jim G.
Mar 7, 2018

#200" girls"#

Explanation:

#"consider the ratio as "color(blue)"parts"#

#color(blue)"3 parts "to120" boys"#

#color(blue)"1 part "to120/3=40#

#"the girls account for "color(blue)"5 parts"#

#rArrcolor(blue)"5 parts "to5xx40=200#

#"There are 200 girls at the school"#

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