Level 2
Last year, Ben was 4 times as old as his son, Fred. This year, their total age is 52 years old. How old will Ben be when he is 3 times as old as Fred?
Level 2
Asher had 5 times as many buttons as Carl at first. Then each of them bought an equal number of new buttons. In the end, Carl had 42 buttons and Asher had 3 times as many buttons as Carl. How many buttons did both of them buy altogether?
Level 3
Violet has 6 times as many tarts as Anna. The total number of Violet's and Anna's tarts is 8 times of Wendy's. Violet and Anna have 294 tarts more than Wendy's. How many more tarts does Violet have than Anna?