IST Applied Mathematics 2

Question 1

A pipe has a diameter of 6 inches. What is its circumference? (Use π ≈ 3.14)

Accepted Answer

18.84 in

Answer

15.7 in

Answer

21.5 in

Answer

24.0 in

Question 2

A parts bin contains 120 items. If 15% are defective, how many are defective?

Accepted Answer

18

Answer

12

Answer

16

Answer

20

Question 3

Convert 3/8 inch to a decimal.

Accepted Answer

0.375

Answer

0.25

Answer

0.425

Answer

0.50

Question 4

A rectangular floor is 20 feet long and 15 feet wide. What is its area?

Accepted Answer

300 sq ft

Answer

250 sq ft

Answer

275 sq ft

Answer

325 sq ft

Question 5

A machine runs at 1,200 RPM. How many full rotations does it complete in 30 seconds?

Accepted Answer

600 rotations

Answer

400 rotations

Answer

500 rotations

Answer

700 rotations

Question 6

A ratio of defective parts is 1:50. In a batch of 1,500 parts, how many are expected to be defective?

Accepted Answer

30

Answer

25

Answer

35

Answer

40