Level 1
During a donation drive, Lisa and her 4 friends collected a total of $5160 in six weeks. What was the average amount each of them collected in a week?
Level 1
A tiger eats an average of 28 kg of meat per day, while a lion eats an average of 30.5 kg of meat per day. How much more meat than the tiger will the lion eat in a week?
Level 2
There are 4 girls and 5 boys.
The average height of the 4 girls is 155 cm.
The average height of 5 boys is 164 cm.
What is the average height of all the children?
Level 3
There are 4 girls and some boys.
The total height of the children is 1440 cm.
The average height of the 4 girls is 155 cm.
The average height of the boys is 164cm.
How many boys are there?
Level 3
The average number of stickers that Adam and Bryan have is 30.
The average number of stickers that Adam and Chris have is 40.
The number of stickers that Bryan has is 23 as many as Chris.