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
Kim has 3 bottles of apple juice. Bottle X holds 400 mℓ more than Bottle Y and Bottle Y holds twice as much as Bottle Z. If Bottle Z holds 600 mℓ of juice, how much does Bottle X hold?
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?
Level 3
There were 30 pupils in a fast food restaurant. Every pupil ordered at least one type burger. Mr Lim received order for 18 beef burgers and 22 vegetarian burgers. How many pupils ordered the vegetarian burger only?
