8 years ago James was twice Janet's age. In 15 years James will turn 37. Susan was born when Janet turned 3. How old will Susan turn in 5 years?
Let's think: James is 37 - 15 = 22 years old. So 8 years ago he was 22 - 8 = 14 years old. That means Janet was 14 / 2 = 7 years old 8 years ago. So Janet is now 7 + 8 = 15 years old. That means Susan is 15 - 3 = 12 years old. So in 5 years she will be 12 + 5 = 17 years old.. The answer is: 17.

Jessica was half her mother's age when her mother died. If her mother were alive now, ten years later, she would have been 70. How old is Jessica currently?
Let's think: If Jessica's mother would be alive today, ten years later after her death, she would be 70, meaning she died at 70 - 10 = 60. If Jessica was half her mother's age when her mother died, she was 1 / 2 * 60 = 30 years old. Currently, ten years later, Jessica is 10 + 30 = 40 years old.. The answer is: 40.

Josh wants to build a square sandbox that is 3 ft long, 3 ft wide for his son. He can buy sand in 3 sq ft bags for $4.00 a bag. How much will it cost him to fill up the sandbox?
Let's think: The sandbox is 3' long, 3' wide so the sq footage of the sandbox is 3 * 3 = 9 sq ft. He needs 9 sq ft of sand to fill the sandbox and he can buy it in 3 sq ft bags so he needs 9 / 3 = 3 bags of sand. The sand costs $4.00 a bag and he needs 3 bags so it will cost him 4 * 3 = $12.00 in sand.. The answer is: 12.

There are 200 snakes in a park. There are three times as many pythons as boa constrictors. If there 40 boa constrictors and the rest of the snakes are rattlesnakes, calculate the total number of rattlesnakes in the park.
Let's think:
If the number of pythons is three times the number of boa constrictors, then there are 3 * 40 = 120 pythons. Together, the number of pythons and boa constrictors is 120 + 40 = 160. If there are 200 snakes in the park, the number of rattlesnakes is 200 - 160 = 40.. The answer is: 40.