ASVAB (Armed Services Vocational Aptitude Battery)Mathematics Knowledge (MK)Medium
A military cook is preparing rations. If a recipe calls for 2 1/2 cups of flour per batch, and the cook needs to make 3 batches, how much flour is required in total?
- A7 1/2 cups
- B6 1/2 cups
- C5 cups
- D8 cups
Show answer & explanationAnswer & explanation
Correct answer: A. 7 1/2 cups
Convert the mixed number to an improper fraction: 2 1/2 = 5/2. Then, multiply by the number of batches: (5/2) * 3 = 15/2. Convert back to a mixed number: 15/2 = 7 1/2 cups.
Why the other options are wrong
- B. This is an incorrect calculation, possibly 2.5 * 2.5 + 1.5.
- C. This is the amount for 2 batches.
- D. This is an incorrect calculation, possibly rounding up.
Multiplying Mixed Numbers
The process of finding the product of a whole number and a fraction.
- Convert mixed numbers to improper fractions first.
- Multiply numerators and denominators.
- Simplify the resulting fraction or convert to a mixed number.
Memory trick: Fractions are Fun, Finish Frequently.