Step: 1

Let p be the number of days required to finish reading the book.

Step: 2

48 + 24 × p = 240

[Write an equation.]

Step: 3

48 - 48 + 24p = 240 - 48

[Subtract 48 from both sides.]

Step: 4

24p = 192

[Combine like terms.]

Step: 5

[Divide both sides by 24.]

Step: 6

[Simplify.]

Step: 7

So, Nathan takes 8 days to finish reading the whole book.

Correct Answer is : 8

Step: 1

Let x be the age of the second child.

Step: 2

The product of the ages is 56, when the age of one child is 7 years.

Step: 3

[Write the equation.]

Step: 4

[Divide both sides by 7.]

Step: 5

[Divide.]

Step: 6

So, the age of the second child is 8 years.

Correct Answer is : 8 years

Step: 1

Let x be the money she is left with.

Step: 2

Money left = money Valerie has - (cost of one shirt × number of shirts)

[Write an algebraic expression.]

Step: 3

[Substitute.]

Step: 4

[Multiply.]

Step: 5

[Subtract 52 from 68.]

Step: 6

So, Valerie is left with $16.

Correct Answer is : $16

Step: 1

Number of balloons Paula bought = 50

Step: 2

Number of yellow colored balloons = 15

Step: 3

Number of red colored balloons = 23

Step: 4

Number of green balloons = Total number of balloons - number of yellow colored balloons - number of red colored balloons

Step: 5

= 50 - 15 - 23 = 12

Step: 6

So, the number of green colored balloons she bought = 12.

Correct Answer is : 12

Step: 1

Night temperature = Temperature in the morning + temperature gone up by afternoon - temperature fell at night

Step: 2

= 58°F + 5°F - 2°F = 61°F

Step: 3

So, the night temperatrue was 61°F.

Correct Answer is : 61°F

Step: 1

Money Anna has now = money initially she had + money she earned - money she spent

Step: 2

= 326 + 158 - 180 = 304

Step: 3

So, the money Anna has now is $304.

Correct Answer is : $304

Step: 1

Let x be the number of hotdogs that Tim bought.

Step: 2

57 = 25 + 4x

[Write an equation.]

Step: 3

57 - 25 = 25 + 4x - 25

[Subtract 25 from each side.]

Step: 4

32 = 4x

[Combine like terms.]

Step: 5

[Divide each side by 4.]

Step: 6

[Simplify.]

Step: 7

Tim bought 8 hotdogs.

Correct Answer is : 8

Step: 1

Let x be the number of loose soaps Laura picked.

Step: 2

102 = 39 + 7x

[Write an equation.]

Step: 3

102- 39 = 39 + 7x - 39

[Subtract 39 from each side.]

Step: 4

63 = 7x

[Combine like terms.]

Step: 5

[Divide each side by 7.]

Step: 6

[Simplify.]

Step: 7

Laura picked 9 loose soaps.

Correct Answer is : 9

Step: 1

Amount Michael has = 72 + 18

Step: 2

72 = 70 + 2

18 = 10 + 8

18 = 10 + 8

[Break the numbers into tens and ones.]

Step: 3

(70 + 10) + (2 + 8)

[Add the tens and ones separately.]

Step: 4

= 80 + 10 = 90

[Add the two sums.]

Step: 5

So, Michael has $90.

Correct Answer is : $90

Step: 1

Let the amount John got from his uncle be $x.

Step: 2

Total cost of paintings = (3 × 32) + ( 5 × 24) = 96 + 120 = $216

Step: 3

[Amount left with John.]

Step: 4

Step: 5

Total amount John got from his uncle = $250.

Correct Answer is : $250

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