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100

In a drawing, there are three circles, four stars, and three triangles. What is the ratio of stars to the total number of shapes.  Simply the ratio

What is 4/10 and 2/5

100
George read 126 pages of a book in 18 minutes. How many pages did he read in 1 minute?
7 pages per minute
200

Write a rate for this situation: 310 heartbeats in 5 minutes.  Simplify the rate.

310 to 5  and 62 to 1

200
The science materials cost $65.70 to do the experiment. If 9 students participated in the experiment, what was the unit cost per student?
$7.30
300

There are 3 white rabbits and 9 grey rabbits in a cage. Write the ratio of white rabbits to the total number of rabbits.  Simplify the ratio

3 to 12 and 1 to 4

300

In Safeway you can buy a 6-pack of sprite for $2.99.  In Lucky you can buy a 4 pack for $1.79.  Which store is cheaper for one can?  What is the cost? 

Lucky (4 pack for $1.79) ;  $0.45 per can.

400

The ratio of white eggs to brown eggs is 3 to 6.  What are two equivalent ratios.  

1 to 2 , 6 to 12 , 9 to 18

400

A 10-ounce can of tomatoes costs $1.59. A 14-ounce can costs $1.99. Which can of tomatoes costs the least per ounce?  How do you know?

14-ounce can is cheaper.  It costs $0.14 per ounce vs. $0.15 per ounce  

500

The Acme factory makes mousetraps at a rate of 15 small traps to 12 large ones. The Beta factory makes mousetraps at a rate of can 45 small traps to 34 large ones.  Are the ratios equivalent?  Show how you know.

No.  15 to 12 x 3 is 45 to 36.  

500

If you can buy 6 cookies for $2.40 what would be the equivalent cost for 8 cookies?

Cost would be $3.20