Step: 1

Let n be the number of horse rides Andrew enjoyed.

Step: 2

[Write a proportion in terms of rides amount .]

Step: 3

4 × 20 = 10 × n

[Write the cross products.]

Step: 4

80 = 10n

[Multiply.]

Step: 5

[Divide both sides by 10.]

Step: 6

8 = n

Step: 7

Number of rides Andrew enjoyed is 8.

Correct Answer is : 8

Step: 1

Let n be the total number of people in the family.

Step: 2

[Write a possible proportion.]

Step: 3

5.50 × n = 44 × 1

[Write the cross products.]

Step: 4

5.50 n = 44

[Multiply.]

Step: 5

[Divide both sides by 5.50.]

Step: 6

Step: 7

The total number of members in the family = 8.

Correct Answer is : 8

Step: 1

Let n be the time taken by Sam to cover the distance of 10.5 km.

Step: 2

[Write a possible proportion in terms of distance time .]

Step: 3

7 × n = 10.5 × 3

[Write the cross products.]

Step: 4

7 × n = 31.5

[Multiply.]

Step: 5

[Divide both sides by 7.]

Step: 6

Step: 7

Sam would take 4.5 hours to cover 10.5 km.

Correct Answer is : 4.5 hours

Step: 1

Let n be the total number of births in 7 hours.

Step: 2

[Write a proportion in terms of hours births .]

Step: 3

3 × n = 900 × 7

[Write the cross products.]

Step: 4

3 × n = 6300

[Multiply.]

Step: 5

[Divide both sides by 3.]

Step: 6

Step: 7

The total number of births in U.S in 7 hours = 2,100.

Correct Answer is : 2,100

Step: 1

Let n be the number of phone calls received by the businessman in 4 hours.

Step: 2

[Write a proportion in terms of calls hours .]

Step: 3

8 × n = 94 × 4

[Write the cross products.]

Step: 4

8n = 376

[Multiply.]

Step: 5

[Divide both sides by 8.]

Step: 6

Step: 7

The businessman receives 47 calls in 4 hours.

Correct Answer is : 47

Step: 1

Let n be the respiration rate of Tony in 25 minutes.

Step: 2

[Write a proportion in terms of Number of breaths minutes .]

Step: 3

5 × n = 25 × 65

[Write the cross products.]

Step: 4

5 × n = 1625

[Multiply.]

Step: 5

[Divide both sides by 5.]

Step: 6

Step: 7

Tony will breath 325 times in 25 minutes.

Correct Answer is : 325

Step: 1

Let n be the number of pages Alice can write in 189 minutes.

Step: 2

[Write a possible proportion.]

Step: 3

27 × n = 8 × 189

[Write the cross products.]

Step: 4

27n = 1512

[Multiply.]

Step: 5

[Divide both sides by 27.]

Step: 6

Step: 7

Alice can write 56 pages in 189 minutes.

Correct Answer is : 56

Step: 1

Let n be the number of pages Henry can write in 48 minutes.

Step: 2

[Write a possible proportion.]

Step: 3

16 × n = 4 × 48

[Write the cross products.]

Step: 4

16n = 192

[Multiply.]

Step: 5

[Divide both sides by 16.]

Step: 6

[Simplify.]

Step: 7

Henry can write 12 pages in 48 minutes.

Correct Answer is : 12

Step: 1

Let n be the cost of 30 books.

Step: 2

[Write a possible proportion.]

Step: 3

6 × n = 30 × 4

[Write the cross products.]

Step: 4

6n = 120

[Multiply.]

Step: 5

[Divide both sides by 6.]

Step: 6

[Simplify.]

Step: 7

The cost of 30 books is $20.

Correct Answer is : $20

Step: 1

Let n be the cost of 27 pastries.

Step: 2

[Write a possible proportion.]

Step: 3

9 × n = 19 × 27

[Write the cross products.]

Step: 4

9 × n = 513

[Multiply.]

Step: 5

[Divide each side by 9.]

Step: 6

Step: 7

The cost of 27 pastries is $57.

Correct Answer is : $57

Step: 1

Let n be the time taken by Tim to walk the distance of 13.5 km.

Step: 2

[Write a possible proportion in terms of distance time .]

Step: 3

9 × n = 13.5 × 4

[Write the cross products.]

Step: 4

9 × n = 54

[Multiply.]

Step: 5

[Divide both sides by 9.]

Step: 6

Step: 7

Tim would take 6 hours to walk 13.5 km.

Correct Answer is : 6 hours

Step: 1

Let n be the total number of chairs.

Step: 2

[Write a proportion.]

Step: 3

14 × n = 56 × 112

[Write the cross products.]

Step: 4

14n = 6272

[Multiply.]

Step: 5

[Divide both sides by 14.]

Step: 6

Step: 7

448 chairs are needed for 112 tables.

Correct Answer is : 448

Step: 1

Time = d i s tan c e t r a v e l l e d a v e r a g e s p e e d

Step: 2

= 7 m i 3 . 5 m i / 4 5 m i n s = 90 mins

Step: 3

It would take him 1.5 hrs to travel 7 mi.

Correct Answer is : 1.5 hours

Step: 1

[Write a possible proportion.]

Step: 2

[Write the cross products.]

Step: 3

Correct Answer is : p = $10.75h

Step: 1

The number of newspapers produced in 3 hours = 2400

Step: 2

The number of newspapers produced in one hour = 2400 ÷ 3 = 800

Step: 3

The total number of newspapers produced in 14 hours = The total number of newspapers produced in one hour × number of hours

Step: 4

= 800 × 14 = 11200

Step: 5

So, the total number of newspapers produced by the printing machine in 14 hours is 11,200.

Correct Answer is : 11,200

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