Ratios and Percent Proportion Word Problems

• this is not the right way to set it up

• a way to solve percent problems

We can tell if ratios are proportional by...

• top times top, bottom times bottom

• flipping the second and multiplying

• Cross Multiplying (Butterfly!!!)

Which TWO serves earned the highest amount in tips?

• Emma earned 15% tip on a bill for $33.20.

• Ellie earned 22% tip on a bill for $28.42.

• Mick earned 20% tip on a bill for $18.53.

• Ben earned 18% tip on a bill for $24.50.

• Sally earned 10% tip on a bill for $36.70.

Sarah earned $175 babysitting for her neighbors. If she saved 40% of her money, how much did she save?

• $22.85

• $135

• $245

• $70

Barbara keeps 15% of her paycheck each week to put in her savings account. If Barbara makes $300 a week, how much will she have saved after 6 weeks?

• $270

• $27

• $2700

• $2.7

A student earned a grade of 80% on a math test that had 30 problems. How many problems on this test did the student answer incorrectly?

• 24

• 6

• 16

• 20

Dr. Hall files 320 insurance claims every month. If 5% of those claims are rejected, how many of the claims are accepted?

• 304

• 16

• 300

• 20

A comparison of two quantities using the word to, for every/each, or a colon :.

• Ratio

• Rate

• quantity

• scale factor

A comparison of boys to girls in the class is a ratio of ______.

• part to part

• percent

• proportion

• product

A comparsion of boys to total students in the class is a ratio that compares _____.

• part to whole.

• ratio

• sum

• difference