Find the unit rate?

Find the unit rate:


A car travels 220 mi in 4 h.





Solve each proportion:


0.8/90 = 5.6/y





Write a proportion to describe the situation. Then solve.


A photo that measures 5 in. by 7 in. is


enlarged to 7.5 in. by b in.





Find the probability for one roll of a number cube.


P(1 or 2)





Solve:


Find 45% of 12.





Find each percent of change. Tell whether the


change is an increase or a decrease. Round


the nearest tenth of a percent.


from 85 to 50





A salesperson made a $128 commission


selling merchandise. His commission


rate was 5%. Find the dollar amount


of his sales.





Explain the difference


between a markup and a discount.





In how many ways can you make $.35 in


change without using pennies?

Find the unit rate?
1. unit rate means --- per one ----. 55 mi/h


2. cross multiply. .8y = 504 so y = 630


3. 5/7 = 7.5/x


x = 10.5 in.


4. 1/6 + 1/6 = 2/6 = 1/3


5. 0.45 times 12 = 5.4


6. change/original = 35/85 = 41% decrease


7. ok, i've had enough. ask your parents for help.