Ratios and Proportion Word Problems

Find the value of n in 18 : n = 4 : 12

Find the value of n in n : 8 : 12 = 8 : 16 : 24

Divide 56 in the ratio of 1:4:3. Give the largest number in the new ratio.

Divide 450 in the ratio of 1:3:2:3. Give the value of the unit ratio.

The ratio of male teachers to female in a seminar is 4:5. There are 12 more female teachers than male teachers. How many male teachers are there are there?

It takes 4 men in 6 hours to repair a kitchen. How long will it take 8 men to do the job if they work at the same rate?

NOTE: Type your answer only. No need to label it.

20 workers can build a house in 30 days. Another house of the same design hired 10 more workers. How many days will it take them working at the same rate to build the similar house?

NOTE: Type your answer only. No need to label it.

What is the ratio of 90 minutes to an hour?

• 3:2

• 9:1

• 1:9

• 2:3

The sum of supplementary angles is 180°. The angles of the supplementary angles are in a ratio of 6:3. What is the measure of the narrowest angle? NOTE: Type your answer only. No need to label it.

• 8

• 4

• 9

• 3