Deck 17: Ratio

Question 1

If a compressor pulley has a 5 3/4 inch diameter and a motor pulley has a 2 3/4 inch diameter, what is the ratio of the revolutions per minute for the motor pulley to the revolutions per minute for the compressor pulley expressed as a fraction in lowest terms?

Answer 1

23/11

Question 2

Express the ratio as a fraction in lowest terms. 6/13:9/13

Answer 2

2/3

Question 3

Find the inverse ratio of the ratio given and express as a fraction in lowest terms. 11/17:3/17

Answer 3

3/11

Question 4

Ratios can be written as two numbers separated by a colon (:).

Question 5

Express the ratio as a fraction in lowest terms. 24.24:36.36

Question 6

Express the ratio as a fraction in lowest terms. 20:35

Question 7

The ratio 2 1/2 to 3 can be change to a ratio of 5 to 6.

Question 8

Two new air-conditioning units are charged for the first time. To be fully charged, unit A needs 20 ounces of refrigerant. Unit B needs 15 ounces. Find the ratio and express as a fraction of the amount of refrigerant used in unit A to the amount used in unit B.

Question 9

Find the inverse ratio of the ratio given and express as a fraction in lowest terms. 16.8:2.22

Question 10

An installer compares the areas of a circular duct and a rectangular duct. The 6-inch by 5-inch rectangular duct has an area of 30 sq in. The 5 1/2-inch diameter circular duct has an area of about 24 sq in. What is the ratio of the area of the circular duct to the area of the rectangular duct?