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ASVAB · Fractions, Decimals, and Percentages

A soldier uses 3/8 of a fuel can. The can held 16 gallons. How many gallons were used?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

6

  1. A 6
  2. B 5
  3. C 4
  4. D 8

Why this is the answer

3/8 × 16 = 48/8 = 6 gallons. 'Of' means multiply when it follows a fraction. One route: 16 ÷ 8 = 2 gallons per eighth, and 3 eighths = 6 gallons. The distractor 8 is half the can (4/8), 4 is a quarter (2/8) and 5 is 5/16 — none match 3/8. Note the question asks how much was used, not how much is left (which would be 10 gallons).
Source: ASVAB AR, Fractions

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About this topic: Fractions, Decimals, and Percentages

Fractions, decimals and percentages appear in nearly every ASVAB maths section. These questions cover converting between the three forms, finding a percentage of a number, percent change and operations with mixed numbers. This is one of 10 Arithmetic Reasoning questions on fractions, decimals, and percentages, each with a full explanation on a single study page.

New to this exam? Our ASVAB exam guide explains the format, scoring, and how to prepare.

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