BMST Mathematics 4

Question 1

A storage tank holds 450 gallons when full. If it is currently 2/3 full, how many more gallons are needed to fill it completely?

Accepted Answer

150 gallons

Answer

2/3 of 450 = 300 gallons already in the tank; 450 − 300 = 150 gallons needed.

Question 2

Which of the following is equivalent to 3.75 × 10²?

Accepted Answer

375

Answer

Multiplying by 10² moves the decimal two places to the right: 3.75 → 375.

Question 3

Solve for x: 4x − 9 = 2x + 7

Accepted Answer

x = 8

Answer

Subtract 2x from both sides: 2x − 9 = 7; add 9: 2x = 16; divide by 2: x = 8.

Question 4

A rectangle has a length of 14 cm and a width of 6 cm. What is its perimeter?

Accepted Answer

40 cm

Answer

Perimeter = 2(l + w) = 2(14 + 6) = 2(20) = 40 cm.

Question 5

If 15% of a number is 45, what is the number?

Accepted Answer

300

Answer

Let n be the number; 0.15n = 45, so n = 45 ÷ 0.15 = 300.

BMST - Basic Math and Science Test Practice Test