If a girl goes to school at 9 a.m. and returns at 12 p.m., how many hours did she spend at school?
Answer
3
The correct answer is 3 — Step 3: The girl spent 3 hours at school.
Step-by-step solution
- Step 1: Note that 9 a.m. is 9 h and 12 p.m. is 12 h.
- Step 2: Subtract the start time from the end time: 12 h − 9 h = 3 h.
- Step 3: The girl spent 3 hours at school.
Common mistake: Confusing noon (12 p.m.) with midnight (12 a.m.)
Concept tested: Time duration in hours
Published · How this solution was prepared and checked
← All Time questions