Percentages
What is 65% of 320?
208
Pg. 10, No. 3
78
Pg. 20, No. 4
20
Pg. 39, No. 14
5
Week 5, Module 1, No. 13
7.7%
Nathan is selling his beloved bass guitar. He first lists it for $300, before decreasing the price by 20%. He then increases the price by 30% before the bass finally sold (rest in peace). For how much did Nathan sell his bass?
$312
Pg. 12, No. 6
22
Pg. 21, No. 7
0.5
Pg. 36, No. 6
64
Week 5, Module 1, No. 12
7
There are n candies in a jar. If one candy is removed, what percent of the candies are left in terms of n?
100[(n-1)/n]
Pg. 13, No. 10
132
Pg. 26, No. 13
140
Pg. 38, No. 10
1/5 (0.2 also works)
Week 3, Module 1, No. 5
3/8
A chemist mixes a 40% acid solution and a 30% acid solution. How many liters of the 40% solution must be added to produce 50 liters of a solution that is 36% acid?
30
Pg. 14, No. 12
48
Pg. 26, No. 15
[ex+(3e+z)y]/4e
Pg. 38, No. 11
21
Week 4, Hard Module, No. 20
0
The price of a cellphone was discounted by 25% and then discounted an additional 20%, to become $348. What was the original price of the cellphone before it was discounted twice?
$580
Pg. 15, No. 14
Pg. 28, No. 18
96
Pg. 38, No. 12
40
Week 5, Module 1, No. 21
60