Consider the Q and A. Q: Mr. Alvarez spends $36 on diesel fuel each week. If the cost of diesel fuel is $3 per gallon, how many gallons of diesel fuel does Mr. Alvarez use in two weeks?
A: 24
What is the step-by-step reasoning process?
Step-by-step reasoning process: In a week, Mr. Alvarez uses $36 / $3 = 12 gallons a week. So in two weeks, he uses 12 x 2 = 24 gallons.

Consider the Q and A. Q: Noel bakes 4 dozen donuts for his class. There are 30 students in class, but only 80% like donuts. How many donuts does each student who likes donuts get to eat?
A: 2
What is the step-by-step reasoning process?
Step-by-step reasoning process: He makes 48 donuts because 4 x 12 = 48. 24 students want to eat donuts because 30 x .8 = 24. They can each eat 2 donuts because 48 / 24 = 2.

Consider the Q and A. Q: Gary has 6 pounds of flour. He will use 4 pounds of flour to make cakes which require 0.5 pounds of flour each. The remaining 2 pounds of flour will be used to bake cupcakes, which require 1/5 pounds of flour. He plans to sell the cakes for $2.5 each and the cupcakes for $1 each in the school's bake sale. How much will Gary earn?
A: 30
What is the step-by-step reasoning process?
Step-by-step reasoning process: Gary can bake 4 / 0.5 = 8 cakes from the 4 pounds of flour. He can bake 2 / 1 / 5 = 10 cupcakes from the 2 pounds of flour. So, he will earn $2.5 x 8 = $20 from the cakes. Hence, Gary will earn a total of $20 + $10 = $30 from baking 8 cakes and 10 cupcakes.

Consider the Q and A. Q: Mr. Lu owns a computer store. For last month, half of their sales are laptops, one-third are netbooks, and the rest are desktop computers. If Mr. Lu's store was able to sell a total of 72 computers, how many of them are desktop computers?
A: 12
What is the step-by-step reasoning process?
Step-by-step reasoning process:
There were 72 / 2 = 36 laptops sold. There were 72 / 3 = 24 netbooks sold. So, there were a total of 36 + 24 = 60 laptops and netbooks sold. Thus, 72 - 60 = 12 desktop computers were sold last month.