The tank of John's car is full: it contains 47 liters of gasoline. After a journey of 275 km, there are 14 liters left. What is the fuel consumption of this car per 100 km? Give the rationale and then the answer.
Let's think step by step. The car consumed 47 liters - 14 liters = 33 liters of gasoline for 275 km. Let x be the fuel consumption per 100 km. We can write the proportion: 33 / 275 = x / 100. The cross product gives: 275 x = 33 * 100. So the car consumes x = 3300 / 275 = 12 liters per 100 km.. The answer is: 12.

Each member of Greg's softball team needs to buy one uniform made up of a shirt, a pair of pants, and socks. A shirt costs $7.50, a pair of pants cost $15, and socks cost $4.50 each if each team member buys the uniform items on their own. If they buy the items as a group, they are given a discount. A discounted shirt cost $6.75, a discounted pair of pants cost $13.50, and discounted socks cost $3.75. How much would their team of 12 save with the group discount? Give the rationale and then the answer.
Let's think step by step. The cost of a regularly - priced uniform is $7.50 for the shirt + $15 for pants + $4.50 for socks = $27. The cost of a discounted uniform is $6.75 for the shirt + $13.50 for pants + $3.75 for socks = $24. By purchasing the discounted uniform, each team member would save $27 for full price - $24 for discounted = $3. So, for the team of 12, they would save $3 * 12 = $36.. The answer is: 36.

Before Cameron broke his right arm, he was able to type 10 words per minute on his phone. After he broke his arm, he had to use his left hand for a while, and he could only type 8 words per minute. What is the difference between the number of words he could type in 5 minutes before and after he broke his arm? Give the rationale and then the answer.
Let's think step by step. Before Cameron broke his hand he could type 5 10 = 50 words in 5 minutes. After he broke his hand he could only type 5 8 = 40 words in 5 minutes. The difference between the number of words he could type in 5 minutes before and after he broke his arm is 50 - 40 = 10 words.. The answer is: 10.