GMAT Practice Question: An aerosol can is designed so that its bursting pressure, B, in pounds per square inch, is...
Question
An aerosol can is designed so that its bursting pressure, B, in pounds per square inch, is 120 \% of the pressure, F, in pounds per square inch, to which it is initially filled. Which of the following formulas expresses the relationship between B and F ?
- B=1.2 F
- B=120 F
- B=1+0.2 F
- B=\frac{F}{1.2}
- B=\frac{1.2}{F}
Topics: units, translations, expression formulas, percentages
Solution
Step 1
We name the variables provided by the question.
B = \text{bursting pressure} F = \text{initial fill pressure}
Step 2
We translate \textbf{\text{\textbf{\text{"120\% of"}}}} F into a multiplication by converting the percentage to a fraction.
B = \frac{120}{100} \times F
Step 3
We simplify the fraction to express it as a decimal multiplier.
B = 1.2 \times F
Answer
Choice A
