If Joe spent 1/9 of his pocket money of $450 on chocolates and 2/5 on fruits, how much money does he have left?
Let's think: Joe spent 1 / 9 * $450 = $50 on chocolate. Joe spent 2 / 5 * $450 = $180 on fruits. Joe has $450 - $50 - $180 = $220 left.. The answer is: 220.

Neil baked 20 cookies. He gave 2/5 of the cookies to his friend. How many cookies are left for Neil?
Let's think: Neil gave 20 x 2 / 5 = 8 cookies. So he is left with 20 - 8 = 12 cookies.. The answer is: 12.

At the Johnson family reunion, there were 45 children and one third as many adults. One third of the adults wore blue. How many adults did not wear blue?
Let's think: One third as many adults as children is 45 / 3 = 15 adults. One third of adults wore blue, or 15 / 3 = 5 adults wore blue. Thus, the remaining 15 - 5 = 10 adults did not wear blue.. The answer is: 10.

Artemis is making tea for a party. She knows her mom drinks an 8-ounce cup of tea and uses one ounce of tea. She will use this same ratio for the party. The party has 12 people there and each of them wants a 6-ounce cup of tea. How many ounces of tea does she need?
Let's think:
She is making 72 ounces of water because 12 x 6 = 72. She needs 9 ounces of tea because 72 / 8 = 9.. The answer is: 9.