Ratio/Rates
Write as a ratio in simplest form.
36 dogs to 48 cats
3:4
24/36, 60/90
YES, both equal 2,160
61.2 is what percent of 90?
68%
Find discount and selling price.
Box of diapers: $28.75, 10% off
Discount: $2.88
Sale Price: $25.87
Find percent of change, and label it as increase or decrease.
A computer store changed the price of a laptop from $250 to $290.
16% increase
Express rate as a unit rate.
228 magazines in 4 boxes
57 magazines/box
You get paid:
$9.50 for 1 hour of work
$19.00 for 2 hours of work
$28.50 for 3 hours of work
$38.00 for 4 hours of work
Is this rate proportional?
Yes, it is $9.50/hour
77% of what number is 100.1?
130
Manny took a cab to a concert. If the cab fare was $14 and he wants to leave a 15% tip, how much will he pay in total?
$16.10
Find the percent of change, and label as increase or decrease.
Penelope spent $120 on groceries last week. This week she spent $105
12.5% decrease
Write as a ratio in simplest form.
40 horses to 6 cows
20:3
Solve the proportion.
6/2 = n/14
n = 42
221 is 65% of what number?
340
Find the final price of a $149.99 smart watch with 8.5% sales tax.
$162.74
What do all of the letters stand for in the simple interest formula? I=prt
Interest
Principle Investment
Rate
Time
Express rate as a unit rate.
378 miles to 15 gallons of gas.
25.2 miles/gallon
Solve the proportion.
6/4 = 21/r
r = 14
What is 22% of 45?
9.9
The Martin family went out to dinner. Their meal cost $125.80. They used a coupon to save 15% on their meal. They left an 18% tip on the original total. Find the total dinner bill, including the discount and tip.
$125.97
Find the simple interest.
$750 at 3% for 15 years
$337.50
Write as a ratio in simplest form.
52 plates to 24 bowls
13:6
It costs $93.50 for 11 tickets. How much does it cost for 6 tickets? Set up a proportion.
x = $51
Nathan completed 60% of the passes he attempted during the last football season. If he attempted 90 passes, how many did he complete?
54 passes
Reggie is a car salesman and makes 2.5% commission off every car he sells. If he sold 6 cars last month for a total of 204,000, how much did he earn?
$5,100
Malorie took out a loan to build a deck. The loan was for $24,000 and had a 2.5% simple interest rate. If she paid a total of $900 in interest, how long did she have the loan?
1.5 years