What percent of 3 minutes is 15 seconds?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → \(8\displaystyle\frac{1}{3}\)%
Before taking a percentage, both quantities must be in the same unit, so the minutes are changed into seconds.
3 minutes \(=3\times60=180\) seconds
15 seconds as a part of 180 seconds \(\displaystyle =\frac{15}{180}=\frac{1}{12}\)
As a percentage: \(\displaystyle \frac{1}{12}\times100=\frac{25}{3}=8\frac{1}{3}\)%