Question: Haleigh decides that instead of throwing away old candles, she can use the last bit of wax combined together to make new candles. Each candle has 10% of it's original wax left. How many 5 ounce candles can she make if she has five 20 oz candles, 5 five ounce candles, and twenty-five one ounce candles?
Answer with step-by-step thinking: She gets 2 ounces of wax from a 20 ounce candle because 20 x .1 = 2. She gets 10 ounces total from these candles because 5 x 2 = 10. She gets .5 ounces of wax from each five ounce candle because 5 x .1 = .5. She gets 1.5 ounces total from these candles because 5 x .5 = 2.5. She gets .1 ounces from each one ounce candle because 1 x .1 = .1. She gets 2.5 ounces from these candles because 25 x .1 = 2.5. She gets 15 ounces total because 10 + 2.5 + 2.5 = 15. She can make 3 candles because 15 / 5 = 3.
So the answer is 3.


Question: Lydia is planning a road trip with her family and is trying to plan a route. She has 60 liters of fuel and she will use all of this during her trip. She isn't sure how much fuel she is going to use in the first third of the trip but she knows she will need a third of all of her fuel for the second third of the trip, and half this amount for the final third of the trip. How much fuel, in liters, can Lydia use in the first third of the trip?
Answer with step-by-step thinking: In the second third of the trip, Lydia is going to use 60 liters of fuel / 3 = 20 liters of fuel. In the final third of the trip, she needs half of this amount so she is going to be using 20 liters / 2 = 10 liters of fuel. So in the first third, Lydia used the remaining amount of fuel which is 60 total liters of fuel – 20 liters of fuel in the second third – 10 liters of fuel in the final third = 30 liters of fuel.
So the answer is 30.


Question: Wade has a hot dog food truck. He makes $2.00 in tips per customer. On Friday he served 28 customers. He served three times that amount of customers on Saturday. On Sunday, he served 36 customers. How many dollars did he make in tips between the 3 days?
Answer with step-by-step thinking:
On Saturday, he served 3 times the amount of customers that he served on Friday, which was 28 customers so he served 3 * 28 = 84 customers. He served 28 customers on Friday, 84 on Saturday and 36 customers on Sunday for a total of 28 + 84 + 36 = 148 customers. Each customer tipped him $2.00 and he had 148 customers so he made 2 * 148 = $296.00.
So the answer is 296.