Level 3
The number of lemons a fruit seller bought in December was 30% more than in November. In January, he bought 50% less lemons than in December. If there were 3577 more lemons in November than January, how many lemons did the fruit seller buy in November?
Level 2
Natalie gave 13 of her stamps to her mother and 12 of her stamps to her father. She used 14 of the remaining stamps. What fraction of her stamps was left?