Level 3
In an old books sale, 1451 comics were sold on Saturday. 154 fewer novels were sold on Friday than on Saturday. 325 more comics were sold on Sunday than on Saturday. How many comics were sold altogether on the three days?
Level 3
Kim had some stickers at first. After he bought another 48 stickers, he had thrice as many stickers as before. How many stickers did Kim have at first?
Level 3
Iris had some candies at first. After she gave away 3 candies to her sister and ate another 3 candies, she went to buy another 42 candies. In the end, she had thrice as many candies as before. How many candies did iris have at first?
Level 3
Mandy put 3452 buttons in three boxes X, Y and Z. Box X and Box Y contained a total of 1825 buttons. Box Y and Box Z contained a total of 2957 buttons. How many buttons were there in Box X and Box Z altogether?
Level 3
There were 40 pupils in a class. 28 of them got an A in a Mathematics test. 22 of them got an A in a Science test. Every pupil got at least an A in the Mathematics test or Science test. How many of them got an A in both the Mathematics and Science tests?
