ISEE Lower Level Quantitative : Ratio and Proportion

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

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Example Questions

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Example Question #9 : How To Find A Proportion

If Katie's computer has  of its power left after being on for  hours, how many hours of battery power remain?

Possible Answers:

Correct answer:

Explanation:

If Katie's computer has 60% of its power left after being on for 2 hours, then that means 40% of the battery was used to power the 2 hours. X represents the total number of hours that the battery can last. 

Next, we divide each side of the equation by 40. This results in:

Since 60% of 5 is equal to 3, the correct answer is 3. 

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