RATIOS & RATES
A tray contains 10 chocolate chip muffins, 12 blueberry muffins, 2 pumpkin muffins, and 8 corn muffins.
What is the ratio of pumpkin muffins to chocolate chip muffins in simplest form?
Answer: 1:5
Determine if the relationship is proportional:
Minutes: 1 8 18 32
Calories: 9 72 162 288
Answer: Yes, constant of proportionality = 9
A map scale is:
0.5 inch = 75 miles
If two cities are 2.75 inches apart on the map, what is the actual distance?
Answer: 412.5 miles
Find 42% of 135
Answer: 56.7
$3,750 is invested for 4 years at 1.85%.
How much interest is earned?
Answer: $277.50
Write the ratio in simplest form:
6 feet to 11 inches
Do these ratios form a proportion?
5/27 and 3/16.2
Answer: Yes
A model lighthouse uses a scale of:
8 inches = 30 feet
The actual lighthouse is 210 feet tall.
How tall is the model?
Answer: 56 inches (4⅔ feet)
10.2 is 21.25% of what number?
Answer: 48
Simone borrows $13,500 for 72 months at 5.9%.
How much will she pay back in total?
Answer: $18,279
Gabe scored 380 points in 5 bowling games.
What was his average score per game?
Answer: 76
Solve:
x/12 = 15/40
Answer: x = 4.5
A battleship model is 3 feet long.
The actual ship is 681 feet long.
What scale was used?
Answer: 1:227
DAILY DOUBLE:
A car was purchased for $32,985 and is worth $19,500 five years later.
Find the percent change and classify it.
Answer: 40.9% decrease
$1,200 earns $546 in interest over 7 years.
What was the interest rate?
Answer: 6.5%
Which is the better deal?
Option A: 2 lbs pears for $1.98
Option B: 5 lbs pears for $4.60
Answer: Option B
1⅔ cups of milk makes 16 cookies.
How many cups are needed for 24 cookies?
Answer: 2.5 cups
Figure A and Figure B are similar.
Figure A base = 36
Figure B base = 18
Find the scale factor from A to B.
Answer: 1/2
A stereo costs $429.99 and is on sale for 35% off.
How much money is discounted?
Answer: $150.50
How many years will it take $5,000 to reach $7,500 at 8% simple interest?
Answer: 6.25 years
Ciera drives 18 miles in 24 minutes.
James drives 46 miles in 60 minutes.
Who drives faster?
Answer: James
341 runners were in the first wave,
295 in the second,
316 in the third.
If 7 out of every 8 finished, how many did NOT finish?
Answer: 119
A flagpole casts a 20-foot shadow.
Lexi is 5'9" and casts a 5-foot shadow.
How tall is the flagpole?
Answer: 23 feet
A television costs $1,349 and is on sale for 20% off.
Sales tax is 8%.
What is the final price?
Answer: $1,165.54
Andy pays $4,937.50 in interest on a 5-year loan at 12.5%.
How much was the original loan?
Answer: $7,900