ITBS Mathematical Problem Solving 4

Question 1

A rectangular room is 15 feet long and 10 feet wide. Carpet costs $3.50 per square foot. How much will it cost to carpet the entire room?

Accepted Answer

$525.00

Answer

Area = 15 × 10 = 150 sq ft; 150 × $3.50 = $525.00.

Question 2

If 5 workers can build a fence in 12 days, how many days will it take 10 workers to build the same fence?

Accepted Answer

6 days

Answer

Doubling the workers halves the time: 12 ÷ 2 = 6 days.

Question 3

A class of 30 students took a test. 60% scored above 80. How many students scored 80 or below?

Accepted Answer

12

Answer

60% above 80 means 40% scored 80 or below: 40% × 30 = 12 students.

Question 4

A cylinder has a radius of 5 cm and a height of 10 cm. Using π ≈ 3.14, what is the approximate volume?

Accepted Answer

785 cm³

Answer

V = π × r² × h = 3.14 × 25 × 10 = 785 cm³.

Question 5

A store is having a 30% off sale. A jacket originally costs $80. What is the sale price?

Accepted Answer

$56

Answer

Discount = 30% × $80 = $24; sale price = $80 − $24 = $56.

ITBS - Iowa Test of Basic Skills Exam Practice Test