[Question]: Ethan makes beeswax candles. For each candle, he uses 8 ounces of beeswax and 1 ounce of coconut oil. If he makes three less than 10 candles, what will be the combined weight of the candles in ounces?
[Answer]: If each candle is 8 ounces of beeswax and 1 ounce of coconut oil, then each candle weighs 8 + 1 = 9 ounces. Three less than 10 candles is 10 - 3 = 7 candles. Thus, 7 candles, each weighing 9 ounces, will have a combined weight of 7 * 9 = 63 ounces.
So the answer is 63.

[Question]: 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?
[Answer]: 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.
So the answer is 12.

[Question]: There are 28 students in a classroom. Half of them have 5 notebooks each and the other half have 3 notebooks each. How many notebooks in total are in the classroom?
[Answer]:
Half of the class consists of 28 students / 2 = 14 students. One half of the students have 14 students * 3 notebooks / student = 42 notebooks. The other half have 14 students * 5 notebooks / student = 70 notebooks. There are 42 notebooks + 70 notebooks = 112 notebooks in total in the classroom.
So the answer is 112.