Level 3
The number of banana puffs Caden baked was ⁴₇ of the total number of puffs. After baking another 98 banana puffs, the number of banana puffs became ⁶₇ of the total number of puffs. How many puffs did she bake at first?

Level 3
A drink stall had 66 small and big packets of green tea. The number of small packets is ²₉ of the number of big packets. After selling a few big packets of green tea, there are ¹₄ as many small packets as big packets left. How many big packets of green tea were sold?

Level 3
There was an equal number of tables and chairs in the morning. At noon, some tables were added and some chairs were removed, resulting in the number of tables being increased by 20% while the number of chairs decreased by 30%. At 7 p.m. the number of tables increased by 50%. If a total of 32 tables were added during the day, how many more tables than chairs were there in the end?

Level 3
25% of the people are performers for a concert and the rest are spectators. 60% of the spectators are adults and there are 420 less child spectators than adult spectators. How many adult spectators must join so that 56% of the people are adult spectators?

Level 3
There were pink, yellow and blue stamps in a container. Sean put another 6 pink stamps and 10 blue stamps in the container, then the ratio of the number of yellow stamps to the number of blue stamps became 5 : 3. Then, he doubled the number of pink stamps and removed 28 blue stamps. The ratio of the number of pink stamps to yellow stamps became 2 : 1. He counted and found that there were a total of 62 stamps left in the container. Find the number of pink stamps that he had at the beginning.