Percents And Probability Worksheet With Answers - Lesson 12-19 Page 37
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4914.
Can an amount be decreased by more than 100%? Explain.
15.
From 1910 to 1930 Oregon had 3 seats in the House of Representatives. From 1980 to 2006,
Oregon had 5 seats in the House of Representatives. Find the percent of increase in Oregon seats
in the House of Representatives.
16.
Th e average price of gasoline was $1.29 in 1997 and $3.15 in 2007.
Find the percent of increase. Round to the nearest tenth.
17.
Stephanie collects teddy bears. Last year she had 20 bears in her
collection and this year she has 24. Find the percent of increase.
18.
In 2000, Roberto paid $1,500 for a digital camera. In 2008, he paid 70%
less for a new digital camera. Find the amount Roberto paid for his new
digital camera in 2008.
19.
Last year 124 students took French. Th is year 25% fewer students took
French. How many students are taking French this year?
20.
One middle school sold $840 worth of plants during a fundraising event. Th ey hope to increase their
sales next year by 40%. How much money do they hope to raise?
review
21.
Lani has 40 fl ashcards numbered 1 to 40. Th e cards are shuffl ed and one card is picked randomly.
a. Find P(6 is chosen).
b. Find P(an even number is chosen).
c. Find P(a multiple of 5 is chosen).
d. Find P(47 is chosen).
22.
Scott was playing darts at his friend’s house. He threw 4 bullseyes
out of 20 attempts. Using experimental probability, predict how many
bullseyes he will hit in his next 30 attempts.
23.
Wildlife rangers tagged 15 rabbits in a protected green space. Two months
later they returned and counted 8 tagged rabbits of the 80 rabbits seen.
How many rabbits should they estimate were in the green space?
use a proportion or the percent equation to solve.
24.
25.
What is 30% of 90?
What is 75% of 80?
26.
27.
What percent is 24 of 36?
What percent is 12 of 15?
28.
29.
Twenty-two is 11% of what number?
Fift y-six is 14% of what number?
107
Lesson 18 ~ Percent Of Change
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