Proportions
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Equations
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100
Sonya's class has 24 girls and 8 boys. Her school has a total of 860 students. If the school has the same ratio of girls to boys as her Sonya's class, how many girls are in the school?
645 girls
100
Greg bought 6 post cards for $3.00. At this rate, how much would 10 post cards cost?
$5.00
100
29r + 4 = 28 + 13r
r = 1.5
100
28.8 is what percent of 120?
24%
100
What percent of 56 is 49?
87.5%
200
On a field trip, there must be one adult for every 8 students. If 32 students go on the field trip, how many adults must attend?
4 adults
200
Jaina bought 4 stamps for $1.48. At this rate, how much would 10 stamps cost?
$3.70
200
4t + 14 = 6t/5 + 7
t = -2.5
200
40% of what number is 22?
55
200
54 is 150% of what number?
36
300
An electrician charges $51 for 3 hours of work. How much would the electrician charge for 2 hours of work?
$34
300
If the 2 triangles are proportional, find the length of the tree's shadow. https://drive.google.com/file/d/0B6wno3WSls40N3NNbGI1MzJYVFE/view?usp=sharing
28 ft
300
15 - x = 2(x+3)
x = 3
300
Find the percent of change from 40 to 46
increase by 15%
300
Find the percent of change from 90 to 72.
decrease by 20%
400
If the two triangles are proportional, find the missing length of the larger triangle. https://drive.google.com/open?id=0B6wno3WSls40QXRrWlRtSGpxdUk
600 m
400
On an average day, the cafeteria serves lunch to 530 students. 2/5 of the students buy dessert. How many of the students did not buy dessert?
318 students did not buy dessert
400
14 - w/8 = 3w/4 - 21
w = 40
400
Kerrigan maintained a balance of $250 in her savings account for 8 years. The bank paid simple interest of 4%. What was the amount of interest earned?
$80
400
Artanis earned $25 selling lemonade. If 80% of this was profit, how much did Artanis spend initially on ingredients? (profit = income - cost)
$5
500
The track team had 14 girls and 18 boys. Then, 6 more girls and 8 more boys joined the team. Did the ratio of girls to boys stay the same? Explain.
No. 14/18 not equal to 20/26
500
A house measures 90ft long by 66ft wide. If the blueprints indicated 1cm = 3ft, what are the dimensions of the house on the blueprints?
30cm long by 22cm wide
500
(2x-9)/3 = 8 - 3x
x = 3
500
Chen bought 4 CDs at the music store. Each cost $14.95. He was charged 5% sales tax on his purchase. What was the total cost of his purchase?
$62.79
500
The Cougars won 62% of their games. They won 93 games. How many games did they lose?
57 games
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