Level 2
The average number of cookies in Box A, Box B and Box C is 37. Box A has 33 cookies. The number of cookies in Box B is twice the number of cookies in Box C. What is the number of cookies in Box C?
Level 2
The average height of a persimmon tree, a mango tree and a coconut tree is 2.8 m. The coconut tree is twice as tall as the mango tree and 1.6 m taller than the persimmon tree. Find the average height of the persimmon tree and the mango tree.
Level 2
Natalie, Emily, Henry and Aaron have an average of $50. The total amount Natalie and Emily have is $36 more than the total amount Henry and Aaron have. Natalie has $35. How much does Emily have?
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?
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 3
The table shows the heights of Aishah, Deepa, and Ruyi. The average height of these children is 133 cm. The digit in the ones place of Aishah's height and the digit in the tens place of Ruyi's height are covered by ink blots.
What is the digit in the ones place of Aisha's height?
What is the digit in the tens place of Ruyi's height?
Level 3
The table shows the heights of Aishah, Deepa, and Ruyi. The average height of these children is 133 cm. The digit in the ones place of Aishah's height and the digit in the tens place of Ruyi's height are covered by ink blots.
What is the digit in the ones place of Aisha's height?
What is the digit in the tens place of Ruyi's height?
