Level 1 PSLE
Cody packed 596 buttons into four cartons, labelled A, B, C and D. Carton A had the most number of buttons and Carton D had the least. The difference in the number of buttons between Carton A and the number of buttons in the other three cartons were 12, 36 and 64 respectively. How many buttons were there in Carton D?
Level 3 PSLE Greg had 3 identical tins of paint that were completely filled. He poured 760 mℓ out from each tin. The total amount of paint left in the 3 tins after pouring was equal to the amount of paint in 1 tin at first. What was the amount of paint in each tin at first?