GMAT Number Properties: Which of the following formulas…
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=F/(1.2)
- B=(1.2)/F
Topics: units, translations, expression formulas, percentages
Solution
Step 1
We name the variables provided by the question.
B = bursting pressure F = initial fill pressure
Step 2
We translate "120% of" F into a multiplication by converting the percentage to a fraction.
B = 120/100 × F
Step 3
We simplify the fraction to express it as a decimal multiplier.
B = 1.2 × F
Answer
B=1.2 F (A)
