Equations
Solve for y:
y + .7 = 2.3
y = 1.6
Solve for x:
.25x = 20
x = 20 / .25
x = 2000/25
x = 80
Write and solve an equation for the following situation:
The sum of a number y and 5 is 11
y + 5 = 11
y = 6
Lisa is baking bread. The recipe calls for 5 cups of sugar, but she has already put in 3 cups. How many more cups of sugar does she need to add?
c + 3 = 5
c=2
When 15.4 is subtracted from a number, the result is 24.6. Write and solve an algebraic equation to find the number.
x - 15.4 = 24.6
+ 15.4 +15.4
x = 40
Solve for a:
4a = 7.2
a = 1.8
Solve for x:
x-32=65
x = 32+65
x = 87
Write and solve an equation for the following situation:
The product of v and 4 is 28
4v = 28
v = 7
How many packages of gummy bears can you buy with $36 if one package costs $9?
9p = 36
p = 4 packages
Bill Perkins and his 2 friends go out to the movies. They buy tickets and snacks. The friends split the cost evenly. If the total cost is c dollars and Bill paid $14.50, what was the total cost of the tickets and snacks?
c/3 = 14.5
c = $43.50
Solve for c:
c/.5 = 7
c = 3.5
Solve for g:
g/6= 2
g = 12
Write and solve an equation for the following situation:
The product of m and 5 is 95
What is
m*5=95
m=95/5
Robert and his 5 friends go out to dinner and split the bill evenly. If the bill is $120, how much did each person pay?
6x = 120
x = $20
Note there are 6 people in the question!
Reyna has x sandwiches made for a party. After the first hour, one-fourth of the sandwiches have been eaten. If 13 sandwiches were eaten in the first hour, how many sandwiches were made originally?
1/4x = 13
x = 52 sandwiches
Solve for k:
k + 41 = 97
k = 56
Solve for m:
6m=156
m = 26
Write and solve an equation for the following situation:
12 less than m is 30
m - 12 = 30
m = 42
Last week Sally had $82. Over the weekend she received some money for doing chores. She now has $110. How much money did Sally earn for her chores?
x + 82 = 110
x = $28
Kristina and Jillian were selling boxes of cookies for a fundraiser. Jillian sold 98 boxes of cookies.
All together, Kristina and Jillian sold 179 boxes of cookies.
A. Write an equation to represent the number of cookies, b, Kristina sold.
B. What is the number of boxes of cookies represented by b in this equation?
98+b=179
b=179-98
b=81
(Ps. remember this question, it's on the quiz!)
Select all equations that have d = 5.5 as a solution.
A. 11=d*2
B. 2d=10.10
C. d+3.25=8.75
D. 8-d=4.5
What is A and C?
Solve for x:
x + 2.75 = 5.18
x = 2.43
Write and solve an equation for the following situation:
The quotient of r and 8 is 3
r/8 = 3
r = 24
Ronnie purchased a a shirt and a pair of pants. The pair of pants cost $35 and altogether, the bill came out to $47.50. How much did the shirt cost?
x + 35 = 47.50
x = $12.50
A hose is filling a pool at a rate of 6 gallons per minute.
A. Write an equation to represent the number of minute, g, it will take for the hose to pump 126 gallons of water into the pool.
B. What is the number of minutes represented by g in this equation?
6g=126
g=126/6
g=21