Question: Betty ordered 18 items in an online shop via cash on delivery. She ordered 6 pieces of slippers that cost $2.5 each, 4 pieces of lipstick for $1.25 each, and 8 pieces of hair color for $3 each. How much did Betty pay in total when it was delivered?
Answer: Betty paid 6 x $2.5 = $15 for the slippers. She paid 4 x $1.25 = $5 for the lipsticks. She paid 8 x $3 = $24 for the hair color. Therefore, Betty paid $15 + $5 + $24 = $44 in total. The answer is 44.

Question: John skateboarded for 10 miles and then walked another 4 miles to the park. He then skated all the way back home. How many miles has John skateboarded in total?
Answer: John traveled 10 + 4 = 14 miles to the park. His round trip would take 14 x 2 = 28 miles. If you subtract the 4 miles he walked then John traveled 28 - 4 = 24 miles. The answer is 24.

Question: 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?
Answer: 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.

Question: Eighteen hours ago, Beth and I took 100 photographs of our project. Today, Beth and I will take 20% fewer photographs of the same project. If we were to take 300 photographs of the project, how many photographs would we take to reach the target?
Answer:
If you took 100 photographs of the project 18 hours ago, and today 20% few photographs have been taken, then 20 / 100 * 100 = 20 fewer photographs of the project have been taken today. The total number of photographs of the project that have been taken today is 100 - 20 = 80. So far, you've taken 80 + 100 = 180 photographs of the project. Since the target number of photographs is 300, the number of photographs that you need to take to reach the target is 300 - 180 = 120. The answer is 120.