Measurement, STD2 EQ-Bank 20

A movie runs for 8400 seconds.

Convert this time to hours and minutes. (2 marks)
--- 3 WORK AREA LINES (style=lined) ---
If the movie starts at 7:15 pm, what time will it finish? (1 mark)
--- 2 WORK AREA LINES (style=lined) ---

Show Answers Only

a. \(\text{2 hours 20 minutes}\)

b. \(\text{9:35 pm}\)

Show Worked Solution

a. \(\text{Step 1: Convert seconds to minutes}\)

\(8400 \text{ seconds} = \dfrac{8400}{60} \text{ minutes} = 140 \text{ minutes} \)

\(\text{Step 2: Convert minutes to hours and minutes}\)

\(140 \text{ minutes} = \dfrac{140}{60} \text{ hours} = 2.333… \text{ hours} \)

\(\text{To find the minutes part:}\ 140 = 2 \times 60 + 20 \)

\(\therefore\ 140 \text{ minutes} = 2 \text{ hours } 20 \text{ minutes} \)

b. \(\text{Starting time: 7:15 pm}\)

\(\text{Movie duration: 2 hours 20 minutes}\)

\(\text{Finish time: 9:35 pm}\)