Level 3
Opal scored 77, 67, 80 and 72 marks for her first four History tests. She wishes to improve her average mark by 5. How many marks must she score for her next History test?
Level 3
Carl's timing for swimming in his first four heats were 42 s, 48 s, 50 s, and 52 s. He wishes to improve his overall average timing by 2 s. What timing must he clock in the fifth heat?
Level 3
The table shows the time taken by Harold to run 100 metres during his training sessions.
After 5 attempts Harold wanted to improve his average time taken by 0.5 seconds by running faster in the 6th attempt. How fast should he run in the 6th attempt in order for him to make the improvement?
Level 3
The table shows the time taken by Harold to run 100 metres during his training sessions.
After 5 attempts Harold wanted to improve his average time taken by 0.5 seconds by running faster in the 6th attempt. How fast should he run in the 6th attempt in order for him to make the improvement?
Level 2
Carla, Julie and Bella have a total of $34.50. Bella has $9.50 more than Carla and $11.20 more than Julie. How much money have Julie and Carla altogether?