Quiz topics- fractions, proportions, ratios, variation

Simplify the fraction 12/18.

• 8/12

• 2/3

• 6/9

• 4/6

If 4 pencils cost $2, how much would 6 pencils cost?

• $5

• $6

• $4

• $3

In a class, the ratio of boys to girls is 3:5. If there are 24 boys, how many girls are there?

• 32

• 48

• 40

• 36

If the ratio of apples to oranges in a basket is 2:5, and there are 14 oranges, how many apples are there?

• 10

• 21

• 7

• 3

If the ratio of apples to oranges in a basket is 2:5, and there are 15 oranges, how many apples are there?

• 10

• 12

• 6

• 30

If y varies directly with x, and y = 8 when x = 4, find y when x = 10.

• 16

• 20

• 12

• 24

If y varies inversely with x, and y = 12 when x = 6, find y when x = 3.

• 48

• 36

• 6

• 24

Simplify the fraction 16/24.

• 2/3

• 4/6

• 8/12

• 10/15

If 3 pens cost $1.50, how much would 5 pens cost?

• $2.50

• $2.00

• $2.75

• $3.00

In a class, the ratio of boys to girls is 2:7. If there are 18 boys, how many girls are there?

• 36

• 27

• 45

• 63