Sam works in his office for 6 hours and Tom works in his office for 7 hours 30 minutes. Find the ratio of their working hours.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 4 : 5
A ratio compares two quantities in the same unit, so first change both times to minutes.
Sam: 6 hours \(=360\) minutes
Tom: 7 hours 30 minutes \(=450\) minutes
\(360:450=4:5\) (dividing both by 90)