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Solving Equations
Literal Equations
Ratios, Rates, Conversions
Proportions
Percents
100
Solve for x... 7x-2=22.5
What is 3.5?
100
Solve the equation for x... ax + bx = -c
What is x= -c/(a+b) ?
100
Convert 6.5 feet into inches
What is 78 inches?
100
What is x? 3/7=9/x
x=21
100
What is 72% of 150
What is 108?
200
Solve for m... 8+3m=-7
What is m=-5
200
Solve for x... m - 3x = 2x + p
What is x=(m-p)/5
200
A bread slicer runs 20 hours per day for 30 days and slices 144,000 loaves of bread. How many loaves per hour are sliced?
What is 240 loaves?
200
Solve for c... 5/(2c-3)=3/(7c+4)
c=-1
200
60% of what number is 102?
What is 170?
300
Solve for b... -4b-5+2b=10
What is b=-7.5?
300
What is the radius of a circle with circumference of 94.2mm? (Use 3.14 for pi)
What is 15mm? 94.2 =2 x 3.14 x r
300
A gerbil eats about 1/4 ounces of food per day. About how many pounds of food can a gerbil eat in a year?
What is about 6 pounds?
300
An airplane has a wingspan of 25 feet and a length of 20 feet. You are designing a model of the airplane with a wingspan of 15 inches. What will the length of the model be?
What is 12 inches?
300
Find the percent change: original amount: 873 new amount: 781
What is a 11% decrease?
400
Solve the equation... 3(h-4)=(-1/2)(24-6h)
Infinitely Many Solutions! 3h-12=-12+3h
400
Use the radius you found from the previous problem to find the area of the circle! (use 3.14 for pi)
Area=706.5 mm^2 Area= pi x r^2
400
If a baseball travels at 90 miles per hour, how many seconds does it take to travel 60 feet?
What is 5/11 seconds or about 0.45 seconds?
400
You project a drawing 7 inches wide and 4.5 inches tall into a wall. The projected image is 27 inches tall. How wide is the projected image?
What is 42 inches?
400
In 1970, the U.S. population was 205 million people. In 2007, it was about 301 million. What was the percent increase?
What is about 47%?
500
You work for 4 hours on Saturday and 8 hours on Sunday. You also receive a $50 bonus. You earn a total of $164. How much did you make per hour?
$9.50
500
Two buildings have the same total height. One building has 8 floors with height h. The other building has a ground floor of 16ft and 6 other floors with a height (h). Write and solve an equation to find the height (h) of these floors.
What is h=8 feet 8h=16+6h 2h=16 h=8
500
You are riding your bicycle to prepare for a race. It takes you 12 minutes to go 2.5 miles. What was your speed in miles per hour?
What is 12.5 miles per hour?
500
In the late afternoon, a 3.5 foot child casts a 60 inch shadow. The child is next to a telephone pole that casts a 50 foot shadow, forming similar triangles. How tall is the telephone pole?
What is 35 feet?
500
This morning the temperature was 38 degrees Fahrenheit. This afternoon it is 57 degrees Fahrenheit. Did the temperature increase by 50% ? Explain.
What is "Yes. 50% of 38 is 19 and 38+19=57"?