Question 1:

The Johnson family arrived at the zoo at 9:45 a.m. to buy tickets. They spent 1 hour and 15 minutes watching the dolphin show and then explored the zoo for 3 hours and 30 minutes. At what time did they leave the zoo?

Question 2:

What is the sum of 24 and 38?

Question 3:

A train is scheduled to depart at 3:00 p.m. and travel for 4 hours and 30 minutes to a different station. However, the train left the station 15 minutes later than the scheduled time. When will the train arrive at the other station?

Question 4:

John has a dentist appointment at 3:30 p.m. the office opens at 3:00 p.m. How long does John need to wait?

Question 5:

The ferry left the dock at 2:00 p.m. and arrived at its destination at 5:45 p.m. How long did the ferry travel?

Question 6:

The office closes at 6:00 p.m. Today, the supervisor left 10 minutes after the office closed and the IT person left 20 minutes after the supervisor left. When did the IT person leave work?

Question 7:

It takes Sarah 20 minutes to go to school and it takes David 35 minutes to go to school. Today, Sarah left home at 7:15 a.m. and David left home at 7:30 a.m. Who arrived at school earlier?

Question 8:

The park opens at 11:00 a.m. and it is currently 10:20 a.m. What is the waiting time until the park opens?

Question 9:

The park provides after-school care for a maximum of 60 minutes after school ends. When is the latest time for pick up?

Question 10:

The library provides after-school care for a maximum of 90 minutes after school ends. When is the latest time for pick up?

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Answer Keys

Question 1: 2:30 p.m.

Question 2: 62

Question 3: 7:45 p.m.

Question 4: 0 minutes if he arrives exactly at 3:30 p.m.

Question 5: The ferry traveled for 3 hours and 45 minutes.

Question 6: 6:30 p.m.

Question 7: Sarah

Question 8: 40 minutes

Question 9: The latest pick-up time cannot be determined without knowing the time when the school ends.

Question 10: The latest pick-up time cannot be determined without knowing the time when the school ends.

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Solutions

Question 1
The Johnson family spent a total of 1 hour and 15 minutes + 3 hours and 30 minutes = 4 hours and 45 minutes at the zoo. So, they left the zoo at 2:30 p.m., 4 hours and 45 minutes after arriving at 9:45 a.m.

Question 2
The sum of 24 and 38 equals 62.

Question 3
To find the arrival time of the train, we need to add the travel time to the delayed departure time. First, we convert the travel time of 4 hours and 30 minutes to just minutes, which is 270. Then we add the delayed departure time of 15 minutes to get a total delay of 285 minutes. Adding this delay to the scheduled departure time of 3:00 p.m., we get an arrival time of 7:45 p.m. Therefore, the answer is 7:45 p.m.

Question 4
If John arrives exactly at 3:30 p.m., then he does not need to wait. So the waiting time is 0 minutes.

Question 5
To find the time the ferry traveled, we can subtract the departure time from the arrival time. 5:45 p.m. - 2:00 p.m. = 3 hours and 45 minutes.

Question 6
Since the office closed at 6:00 p.m., the supervisor left at 6:10 p.m. (10 minutes after closing). The IT person left 20 minutes after the supervisor left, so the IT person left at 6:30 p.m.

Question 7
Since Sarah left home 15 minutes earlier than David, she arrived at school earlier, as she takes only 20 minutes to go to school while David takes 35 minutes. Therefore, the answer is Sarah.

Question 8
To calculate the waiting time, we need to subtract the current time (10:20 a.m.) from the opening time (11:00 a.m.). 11:00 a.m. - 10:20 a.m. = 40 minutes So the waiting time until the park opens is 40 minutes.

Question 9
To determine the latest time for pick up, we need to know when the school ends. Without that information, we cannot calculate the latest pick-up time. Therefore, the answer given is correct.

Question 10
The solution to this question cannot be determined without knowing the time when the school ends.