Hank flies from Los Angeles to Shanghai.
(a) The flight departs on Friday 22 July at 21:40.
The flight takes 13 hours 35 minutes.
The local time in Shanghai is 15 hours ahead of the local time in Los Angeles.
Find the day, date and time in Shanghai when Hank’s flight arrives.
(b) The cost of the flight is $920.
The exchange rate is $1 = 6.87 Chinese yuan.
Find the cost of the flight in yuan.
▶️ Answer/Explanation
(a) Sunday 24 July 0215 (b) 6320.40 yuan
(a) Flight time + time difference: 21:40 + 13h35m = 11:15 next day (LA time). Shanghai time: 11:15 + 15h = 02:15 on Sunday 24 July.
(b) 920 × 6.87 = 6320.40 yuan
The travel graph shows the journey of a bus.
(a) Find the distance the bus travels in the first $50$ minutes.
(b) Find how long, in minutes, the bus is stationary.
▶️ Answer/Explanation
(a) Ans: 10 km
The graph shows the bus starts at 14:00 and reaches 10 km at 14:50, which is a 50-minute duration.
(b) Ans: 40 minutes
The bus is stationary where the graph is flat (slope = 0). This occurs from 15:00 to 15:40, totaling 40 minutes.
