Level 3
During a charity drive, Primary 4 raised 4 times as much money as Primary 2 on the first week. On the second week, Primary 4 raised another $200 while Primary 2 raised another $461. During the entire charity event, Primary 4 raised 2 times as much as Primary 2. What was the total amount raised by Primary 4?
Level 3
Sean and Cathy had some money each. If Cathy gives Sean $49, he will have 3 times as much as Cathy. If Sean gives Cathy $20, he will have the same amount as her. How much money does each person have respectively?
Level 3
3 foreigners have the same mass as 5 locals. Each foreigner's mass is 16 kg more than each local. What is the total mass of the 5 locals in kilograms?
Level 3
Tim packed 508 muffins into large and small boxes. He filled each large box with 20 muffins and each small box with 12 muffins. All the boxes were full and no muffins were left over. What was the least number of boxes used by Tim?
Level 3
The mass of 8 exercise books and 3 guide books is 3.7 kg. The mass of 2 exercise books and 7 guide books is 5.3 kg. Find the mass of each guide book.
