Ratios
The ratio of 4 to 0.
What is 4:0?
A rate with denominator of 1.
What is a unit rate?
36% of 80 is what number?
28.8
The percentage of students who failed the math test if there were 35 students in the class and 5 failed.
14%
140% of what is 60?
42.86
The ratio of the Toronto Raptors' 2021-2022 season if they won 48 games in a 82 game season.
What is 48:82.
A quotient of two or more quantities with the same units.
What is a ratio?
120% of 65 is what?
78
The percentage increase of gasoline if it was $1.49/L in May 2021 vs. $2.22/L in May 2022.
49%
What percent of 7.5 is 10.5?
140%
The unit rate of chips if there is a deal offering 3 bags for $5.
$5 / 3 bags = $1.67 / 1 bag
3 bags / $5 = 0.6 bags / $1
Two ratios or rates that are equal.
What is a proportion.
What percent of 20 is 45?
225%
How much do you save from 15% off of $25.99?
$3.90
Mr. Yuen deposits $5000 in a bank account paying 3% interest annually. How much does he have in the account, if left untouched, after 5 years?
$5796.37
The ratio of $5 to 25 cents.
What is 20 cents: 1 cent?
Method used to verify ratios to be proportional.
What is cross multiply.
92 is what percent of 80?
115%
What is the total GST (5%) and PST (7%) on Simu Liu's book, "We Were Dreamers: An Immigrant Superhero Origin Story" costing $25?
$3
An item was on sale for 15% off, then had an additional discount of 30% off. What is the percent of the total discount for the item?
41%
The exchange rate of Canadian dollars to Euros if on March 4, 2011, it cost $3400 CAN to buy 2500 Euros.
$3400 CAN:2500 Euro or
$1 CAN:0.74 EURO or
$1.36 CAN:$1 EURO
Paying interest on top of previous interest payments.
What is compound interest.
10.4 is what percent of 16.3?
63.8%
The final cost (including GST and PST) of an Ikea Egg Chair costing $89.
$99.68
What combined percentage increase or decrease is the same as a 14% decrease then a 30% increase?
11.8% increase.
Solution:
0.86*1.3 = 1.118 - 1 = 0.118 = 11.8%