Answer:
4 hours and 7 minutes
Explanation:
• The time Tom left = 9:24 A.M.
,
• The time he arrived = 1:31 P.M.
To make the calculation easier, we write the times in 24-hour notation.
• The time Tom left = 09:24
,
• The time he arrived = 13:31
Then subtract:
Tom took 4 hours and 7 minutes to get to his grandparent's house.