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B
100

There are 600 pupils in a school. The ratio of boys to girls in this school is 3:5. How many girls and how many boys are in this school?

375 girls , 225 boys

100

An astronomy club has 29 members, of which 11 are males and the rest are females. What is the ratio of females to males?

18:11


200

A chess club has 39 members, of which 31 are males and the rest are females. What is the ratio of females to all club members?

 38:39


200

A pattern has 12 blue triangles to every 9 yellow triangles. What is the ratio of yellow triangles to all triangles?

9:21 or 3:7


300

A heard of 31 horses has 3 white and some black horses. What is the ratio of black horses to all horses?

28:31


300

A swim team has 27 members, of which 2 are males and the rest are females. What is the ratio of females to males?

25:2


400

A chess club has 34 members, of which 1 is a male and the rest are females. What is the ratio of males to all club members?

1:34

400

The ratio of girls to boys in a gardening club was 7:2. There were 12 boys. How many total members were there in the club?

54


500

A jar is filled with pennies and nickels in the ratio of 5 to 3 (pennies to nickels). There are 30 nickles in the jar, how many coins are there?

80

500

A bag contains 40 marbles, some are white, some transparent. The ratio of white marbles to transparent ones is 3:2. How many white marbles are there?

24


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