Page 166 - Mathematics_Std_4
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hours minutes
16 40
− 8 45
7 55
FOR ONLINE READING ONLY
Therefore, the duration of the school timetable is 7 hours
55 minutes.
Example 3
A train leaves Dodoma at 0530 in the morning and arrives in
Dar es Salaam at 0845 in the morning. How much time does
the train take to travel from Dodoma to Dar es Salaam?
Solution
Departing time = 0530
Arrival time = 0845
–
Duration Duration Arrival time Departure time
=
Subtract the measurements as follows:
hours minutes
08 45
− 05 30
3 15
Therefore, the train takes 3 hours 15 minutes to travel from
Dodoma to Dar es Salaam.
Exercise 6
1. Rehema is a standard four pupil. After lessons, she spends
3 hours and 15 minutes studying. If she starts studying at
7:15 in the evening, what time does she finish studying?
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MATHEMATICS STD 4 PB 2024.indd 159
