Answer the following question.
Joan collects rocks. In her collection of rock samples, she had half as many gemstones as minerals yesterday. Today, she went on a rock collecting trip and found 6 more mineral samples. If she has 48 minerals now, how many gemstone samples does she have?
Step-by-step reasoning process: Yesterday before her rock collecting trip, she had 48 - 6 = 42 mineral samples. She has 1 / 2 the number of gemstones, so she has 42 / 2 = 21 gemstone samples.
The answer is 21.

Answer the following question.
Cody goes to the store and buys $40 worth of stuff. The taxes were 5%. After taxes, he got an $8 discount. Cody and his friend split the final price equally. How much did Cody pay?
Step-by-step reasoning process: The taxes were 40 * .05 = $2. So the price was 40 + 2 = $42. He got a discount so the price he paid was 42 - 8 = $34. Since he paid half his price was 34 / 2 = $17.
The answer is 17.

Answer the following question.
Droid owns a coffee shop. He uses 3 bags of coffee beans every morning, he uses triple that number in the afternoon than in the morning, and he uses twice the morning number in the evening. How many bags of coffee beans does he use every week?
Step-by-step reasoning process: Droid uses 3 x 3 = 9 bags of coffee beans in the afternoon. He uses 3 x 2 = 6 bags of coffee beans in the evening. So, he uses a total of 3 + 9 + 6 = 18 bags of coffee beans every day. Therefore, Droid uses a total of 18 x 7 = 126 bags of coffee beans every week.
The answer is 126.

Answer the following question.
Jed is 10 years older than Matt. In 10 years, Jed will be 25 years old. What is the sum of their present ages?
Step-by-step reasoning process: Jed is 25 - 10 = 15 years old now. So, Matt is 15 - 10 = 5 years old now. Thus, the sum of their present ages is 15 + 5 = 20.
The answer is 20.