EIAT Basic Algebra and Equations 3

Question 1

An elevator travels d floors per trip. After 12 trips it has covered 84 floors. What is d?

Accepted Answer

7

Answer

12d = 84, so d = 84 ÷ 12 = 7 floors per trip.

Question 2

Solve for t: 5(t - 3) = 20

Accepted Answer

7

Answer

Dividing both sides by 5: t - 3 = 4, so t = 7.

Question 3

If 2a + b = 14 and b = 4, what is a?

Accepted Answer

5

Answer

Substituting b = 4: 2a + 4 = 14 → 2a = 10 → a = 5.

Question 4

A tension spring stretches 2.5 cm for every 10 N of force. How many cm does it stretch under 70 N?

Accepted Answer

17.5 cm

Answer

Rate = 2.5/10 = 0.25 cm/N; 0.25 × 70 = 17.5 cm.

Question 5

Solve for p: 4p - 7 = p + 11

Accepted Answer

6

Answer

Subtracting p from both sides: 3p - 7 = 11 → 3p = 18 → p = 6.

EIAT - Elevator Industry Aptitude Test Practice Test