Problem 1: He must add 90ml of water for 300g of mix he uses.
Problem 2: Jacob has 152 bananas left.
Problem 3: They spend 225c altogether.
Problem 4: 29 pineapples can be bought for $5.
Problem 5: 20 children's ticket and 5 adults' ticket cost $16.
Problem 6: There are 24 black cars went past.
