Problem 4 · 2011 Math Kangaroo
Easy
Logic & Word Problems
careful-counting
Simon awoke one and a half hours ago. In three and a half hours he will catch a train to go to his grandma. How long before his train leaves did he wake up?
Show answer
Answer: E — Five hours
Show hints
Hint 1 of 2
He woke up before now; the train leaves after now.
Still stuck? Show hint 2 →
Hint 2 of 2
Add the time since he woke to the time still left before the train.
Show solution
Approach: add the two time gaps
- From waking to now is 1½ hours; from now to the train is 3½ hours.
- So from waking to the train is 1½ + 3½ = 5 hours, answer E.
Mark:
· log in to save