Question

⑦ larry has an assignment due on nov. 29. if he starts to work on it on nov. 3, how many days does he have to complete the assignment?
answer:
⑧ if larry starts doing his assignment at 8:16 a.m. and stops at 4:05 p.m., how long has he worked on it?
answer:
⑨ larry spent 2 h 20 min looking for reference materials in the school library. he left there at 5:32 p.m. when did he start working in the library?
answer:
⑩ mrs smith has an appointment with her doctor at 2:15 p.m. it takes her 23 minutes to walk to the doctors office. if mrs smith leaves home at 1:48 p.m., will she be there on time?
answer:
⑪ bens favourite tv show starts at 11:45 a.m. and lasts 1 h 35 min, when will the show be over?
answer:
⑫ movie a lasts 1 h 43 min; movie b lasts 1 h 16 min. if movie a starts at 11:45 a.m. and movie b starts at 12:10 p.m., which movie finishes first?
answer:
⑬ peter travelled from city a to city b in 170 h. how many days and hours did he spend on travelling?
answer:
⑭ gary wanted to go to the theatre. he left home at 11:26 a.m. first he took a bus for 37 min. then he walked for 16 min. at what time did he reach the theatre?
answer:
a flight from jonesville to littletown takes 2 h 16 min. a flight from norhead to littletown takes 1 h 45 min. if flight a leaves jonesville for littletown at 11:55 a.m., about what time must flight b leave norhead to reach littletown at the same time as flight a?
answer:
isbn 978-1-897164-10-0
complete mathskart (grade 5)

Explanation:

Step1: Calculate days for Larry's assignment

$29 - 3 = 26$ days

Step2: Calculate Larry's work duration

First convert to 24h: 4:05 p.m. = 16:05, 8:16 a.m. = 8:16.
$16:05 - 8:16 = 7$ h $49$ min

Step3: Find Larry's library start time

$5:32$ p.m. $- 2$ h $20$ min $= 3:12$ p.m.

Step4: Check Mrs. Smith's timing

Travel end time: $1:48$ p.m. $+ 23$ min $= 2:11$ p.m.
Compare to 2:15 p.m. → Yes, on time.

Step5: Find Ben's TV show end time

$11:45$ a.m. $+ 1$ h $35$ min $= 1:20$ p.m.

Step6: Compare movie finish times

Movie A end: $11:45$ a.m. $+ 1$ h $43$ min $= 1:28$ p.m.
Movie B end: $12:10$ p.m. $+ 1$ h $16$ min $= 1:26$ p.m.
Movie B finishes first.

Step7: Convert 170h to days/hours

1 day = 24h, $170 \div 24 = 7$ days remainder $2$ h

Step8: Find Gary's arrival time

Total travel time: $37 + 16 = 53$ min
Arrival time: $11:26$ a.m. $+ 53$ min $= 12:19$ p.m.

Step9: Find Flight B's departure time

Flight A arrival: $11:55$ a.m. $+ 2$ h $16$ min $= 2:11$ p.m.
Flight B departure: $2:11$ p.m. $- 1$ h $45$ min $= 12:26$ p.m.

Answer:

1. 26 days
2. 7 hours and 49 minutes
3. 3:12 p.m.
4. Yes, she will be on time
5. 1:20 p.m.
6. Movie B
7. 7 days and 2 hours
8. 12:19 p.m.
9. 12:26 p.m.