Level 3
A box is 400 g when it is 13 filled with stickers.
The same box is 700 g when it is 35 filled with stickers.
What is the mass of the empty box?
3 m
Level 2
70% of a number is 56. What is the number?
2 m
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.
2 m
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?
2 m
Level 2
Reena had 50-cent and 20-cent coins in the ratio of 4 : 5. The total value of the coins was $12. How many 50-cent coins did Reena have?
2 m