Level 3
Don and Tom shared 420 stamps. Don got 3 times as many stamps as Tom. How many stamps must Don give Tom so that both of them would have an equal number of stamps?
Level 3
There were 28 more students in Group A than in Group B. If 9 students transferred from Group A to Group B, how many more students would be in Group A than in Group B?
Level 3
Peter and Oscar had 180 stickers altogether. After Peter gave 21 stickers to Oscar, Peter had 3 times as many stickers as Oscar. How many stickers did Oscar have at first?
Level 3
Bus A and Bus B had a total of 180 passengers. When 16 passengers from Bus A moved to Bus B, Bus A had 4 times as many passengers as Bus B. How many passengers were there in Bus B at first?
Level 3
Nicholas and Cleon shared $60 equally. How much money must Nicholas give to Cleon so that Cleon will have three times as much money as Nicholas?
Level 3
There are 184 paper clips in Box X. There are 4 times as many paper clips in Box Y as in Box X. How many paper clips must be transferred from Box Y to Box X so that there is an equal number of paper clips in each box?
Level 3
A moment ago, there were a total of 1200 spectators at a football match. 346 of the male spectators and 458 of the female spectators left the stadium. Now there are thrice as many male as female spectators left in the stadium. How many more male than female spectators are there in the stadium now?
