Customary liquid volume

Question

A workshop has 2.5 U.S. gallons of rinse water. How many U.S. fluid ounces is that?

1. A0.02✗ Incorrect

   Incorrect. This answer divides by the conversion factor instead of multiplying.

2. B32✗ Incorrect

   Incorrect. This answer misplaces the decimal point (10 times too little).

3. C320✓ Correct

   Correct. Multiply by the conversion factor: 2.5 × 128 = 320.

4. D3,200✗ Incorrect

   Incorrect. This answer misplaces the decimal point (10 times too much).

Answer

C. 320

Rationale

Expressing the same volume in smaller units requires more units. Multiply the gallons by the fluid ounces per gallon.

Worked solution: Multiply by the conversion factor: 2.5 × 128 = 320.