Level 3
Andy has 3 toy boats. Melvin has 2 more toy boats than Andy. Farid has 3 fewer toy boats than Melvin. How many toy boats do they have altogether?
Level 3
Three clowns, Bobo, Toto and Dodo each has 10 balloons. After giving away some of their balloons, Bobo has 5 balloons left, Toto has 3 more balloons than Dodo while Dodo has 2 fewer balloons than Bobo. Find