Question

22. Four friends, Lerato, Jarrod, Ian and Tandeka, play a computer game in which they race a car around a circuit. Lerato takes 2 minutes, Jarrod takes 3 minutes, Ian takes 4 minutes and Tandeka takes 5 minutes to complete one circuit of the game. They play for a total of 12 minutes. a) If they play continuously and at the same rates, which one of the players will be in the middle of a circuit as the time runs out? b) After how many minutes did this player begin the last circuit? c) How many more games did Lerato play than Tandeka?​

Answer 1

a) Tandeka will be in the middle of a circuit as the time runs out.

b) Tandeka began the last circuit after 7 minutes.

c) Lerato played 2 more games than Tandeka.

Step-by-step explanation:

a) To determine which player will be in the middle of a circuit when the 12 minutes are up, we need to figure out which player completes the most circuits in 12 minutes. We can use the formula: time available / time per circuit = number of circuits completed. In this case: 12 minutes / 2 minutes per circuit = 6 circuits for Lerato, 12 minutes / 3 minutes per circuit = 4 circuits for Jarrod, 12 minutes / 4 minutes per circuit = 3 circuits for Ian, 12 minutes / 5 minutes per circuit = 2.4 circuits for Tandeka. Tandeka completes 2 full circuits, and starts the third one, hence she will be in the middle of a circuit when the time runs out.

b) To determine when Tandeka began the last circuit, we need to figure out how many minutes were left when she completed the second circuit. We know that Tandeka completes 2 full circuits in 10 minutes (2 x 5 minutes). So, the last circuit starts after 12 minutes - 10 minutes = 2 minutes

c) To determine how many more games Lerato played than Tandeka, we can subtract the number of games Tandeka played from the number of games Lerato played: 6 games - 4 games = 2 games.

Step-by-step explanation: