Level 2
Ethan buys a jumpsuit, a blouse and a dress. The average cost of these items is $82. The cost of the dress is four times the total cost of the jumpsuit and the blouse. If the jumpsuit costs $14, find the difference in cost between the blouse and the dress.
Level 2
Samantha scored a total of 98 marks for her History and Geography tests and a total of 130 marks for her Chinese and English tests. What was her average marks for the 4 subjects?
Level 2
There are 8 boys and 12 girls in a class. If each boy gets 15 sweets and each girl gets 20 sweets, what is the average number of sweets each child gets?
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?
