Ratios, rates, and proportions 1 — Problem Solving & Data Analysis

Questions in this quiz (8)

1. Simplify the ratio 18:24.

   • $$2:3$$
   • $$3:4$$
   • $$4:3$$
   • $$3:5$$

2. For a person $$m$$ miles from a flash oflightning, the length of the timeinterval from the moment the personsees the lightning to the momentthe person hears thethunder is $$k$$ seconds.The ratio of $$m$$ to $$k$$ can beestimated to be $$1$$ to $$5$$.According to this estimate,the person is how manymiles from a flashof lightning if the timeinterval is $$25$$ seconds?

   • $$5$$
   • $$7$$
   • $$10$$
   • $$12$$

3. A cheetah has a mass of 45 kilograms. What is the cheetah’s mass, in grams?(1 kilogram = 1000 grams)

   • $$0.045$$
   • $$0.45$$
   • $$4500$$
   • $$45000$$

4. A printing machine in a factory produces posters at a constant rate of 75 posters per hour. At this rate, how many posters will the machine produce in 4 hours?

   • $$280$$
   • $$300$$
   • $$320$$
   • $$350$$

5. An object's speed is 500 yards per minute. What is the object's speed, in feet per second?(1 yard = 3 feet)

   • $$1500$$
   • $$2500$$
   • $$150$$
   • $$25$$

6. In a box of pencils, the ratio of yellow pencils to blue pencils is $$5$$ to $$2$$. There are $$30$$ yellow pencils in the box. How many blue pencils are in the box?

   • $$6$$
   • $$12$$
   • $$15$$
   • $$30$$

7. In a box of markers, the ratio of blue markers to green markers to red markers is $$6 : 3 : 1$$. There are $$72$$ blue markers in the box. How many total markers are in the box?

   • $$16$$
   • $$84$$
   • $$120$$
   • $$144$$

8. A group of sea turtles migrated along the Pacific Coast, traveling a total of $$1860$$ miles. One turtle in the group completed the journey in $$93$$ days. On average, how many miles did the turtle travel per day?

   • $$20$$
   • $$21$$
   • $$22$$
   • $$23$$