Word Problems - Set Up
The sum of four and a number.
4 + n
Mr. B runs 16 miles per day. How many days will it take him to run 112 miles?
7 days
-3x = 18
x = -6
3(c + 5) = 27
c = 4
x + 3 = 5
x = 8
Added instead of subtracted
The quotient of a number and six.
n / 6
There are 32 teachers at DLPMS. Mr. Slavik has observed 8 of them. How many more does he have to observe?
24 teachers
4k - 5 = 27
k = 8
5y + 7 + 3y - 2 = 85
y = 10
5b = -10
b = 2
A negative divided by a positive is a negative.
Seventeen more than a number.
n + 17
Mrs. Colthorp has $20 to spend at Target. She buys a DVD for $11. How much money does she have left?
$9
x/5 - 3 = 4
x = 35
5(m + 2) - 2m + 3 = 25
m = 4
2(x + 4) = 12
2x + 4 = 12
2x = 8
x = 4
Forgot to distribute the 2 to the 4.
Three times a number plus seven.
3n + 7
Justin wants to buy a $120 running jacket. He plans to save $12 each week and he already has $48. How long will it take him to save enough money?
6 weeks
x + 3 = -9
-12
6w + 4(w - 5) = 70
w = 9
5k + 2 - 3k + 6 = 48
8k + 8 = 48
8k = 40
k = 5
Twelve less than a number.
n - 12
Kendra wants to go bowling. It costs $4.50 per game and it is $2 to rent shoes. If Kendra has $20, how many games will she be able to bowl?
4 games
-2 + 4x = 14
x = 4
6k + 2(k - 1) + 8 = -18
k = -3
7 + 2(g + 2) + 3g = 12
7 + 2g + 4 + 3g = 12
5g + 11 = 12
5g = 1
g = 5