Level 2
The average mass of 2 grapefruits and 5 jackfruits is 2.4 kg. The average mass of each jackfruit is 2 kg. The difference in mass between the 2 grapefruits is 90 g. Find the mass of the heavier grapefruit. (Give your answer in kg and g.)
Level 2
The average weight of 5 students is 42 kg. When the weights of Fred and Cody are included, the average weight becomes 46 kg. Cody is 6 kg lighter than Fred. What is Fred's weight?
Level 3
Molly, Nellie and Olivia had a sum of money. The amount of money Molly had was 45 of the amount of money Nellie had. The ratio of the amount of money Nellie had to the total amount of money Olivia and Nellie had was 3: 8. After Olivia gave $15 to Nellie, she had as much money as Nellie. How much more money did Olivia have than Molly in the end?
Level 3
Adam has 200 red stickers, blue stickers and green stickers.
40% of the stickers are blue.
30% of the remaining stickers are red.
The rest are green stickers.
Level 3
Titus bought some custard and apple pastry puffs in the ratio of 7 : 6. After Titus's classmates ate an equal number of the two types of pastry puffs, there were 35% fewer apple than custard pastry puffs. In the end, there were 165 pastry puffs left. How many pastry puffs of each type were eaten?
