Ratios and Proportions Pretest

Solve the proportion below

• 21

• 7

• 8

• 24

Johnny buys broken bicycles from the junk yard, repairs them, and then resells them. He recently sold a bike for $50, which was 250% of the price at which he bought it. What was the price he paid for the bicycle from the junk yard?

• $12.50

• $20.00

• $37.50

• $125.00

I paid $15.00 for 6 gallons of gasoline.
What was the price PER gallon?

• $0.40

• $9.00

• $2.50

• $0.90

Patrick has 2 black, 3 red, and 5   white toy cars. What is the ratio of red toy cars to all the toy cars? 

• 3:5

• 1:3

• 3:11

• 3:10

Two quantities are in a ​ (a)   if the two quantities vary and have a constant ratio between them.

• proportional relationship

• proportional

• unit rate

• nonproportional

• constant of proportionality

Two quantities are ​ (a)   if the ratios comparing them are equivalent.

• proportional

• nonproportional

• constant of proportionality

• proportion

Write how to find the proportion of

2:8 :: 25:625

(Do not give space first right the means than the extremes.)

Mathematical Equivalence

ON

For finding out ratio of two quantities, both should be expressed in the _​ (a)   Unit

• Same

• Different

• Equal

When two ratios are equal they are .

(a)  

• Proportional

• Ratio

• Rate

• Unit Rate

Which of the following options is a real life example of a ratio?

• 12 noodles

• 4 meatballs : 1 cup of sauce

• 1 jar of sauce

• 15 desserts