Ratio & Proportion

The ratio of boys to girls in history class is 4 to 5. How many girls are in the class if there are 12 boys in the class?

• 12 girls
• 15 girls
• 5.3 girls
• 27 girls

Two slices of Dan’s Famous Pizza have 220

Calories. How many Calories would you expect to be in 5 slices of the same pizza?

• 2.5 calories

• 550 calories

• 250 calories

• 460 calories

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Determine if the ratios are proportional.
4/5 and 15/20

• Yes
• No

Solve for A in the table.

• A= 40
• A= 10
• A= 9
• A= 45

Tags

CCSS.5.OA.B.3

What is the lowest form of the ratio 84:99?

• 28:33

• 33:28

• 9:4

• 20:3

There are 80 students in Mr. Sen’s classes. The ratio of boys to girls is 2 : 3.

How many boys are in the classes?

How many girls?

• Boys: 32

  Girls: 48

• Boys: 48

  Girls: 32

• Boys: 5

  Girls: 15

• Boys: 15

  Girls: 5

If a, b, c, d are in proportion, then which of the following is true?

• a x b = c x d

• a x c = b x d

• a x d = b x c

• none of these

A lorry uses 80 litres of fuel on a trip of 280 kilometres.

How much fuel would the same lorry use on a trip of 196 kilometres?

• 114 litres

• 56 litres

• 686 litres

Divide 1kg in the ratio 3:5

• 300g, 500g

• 3kg, 5kg

• 250g, 750g

• 375g, 625g