Question: John buys 20 bars of soap each weighing 1.5 pounds for $.5 per pound. How much money did he spend on soap?
Answer with step-by-step thinking: He bought 20 * 1.5 = 30 pounds of soap. That cost 30 * .5 = $15.
So the answer is 15.

Question: Bruno wants to buy two and one-half dozens of pens. How many pens will he have?
Answer with step-by-step thinking: Since a dozen is equal to 12, then two dozens are equal to 12 x 2 = 24. One - half dozen is equal to 12 / 2 = 6. Thus, Bruno will have a total of 24 + 6 = 30 pens.
So the answer is 30.

Question: Mom went shopping at the market. She left with 55. She bought 2 packs of bananas for 4 each, pears for 2, asparagus for 6 and finally a chicken for 11. How much money does Mom have left?
Answer with step-by-step thinking:
Mom bought things that cost: 4 + 4 + 2 + 6 + 11 = 27 . So she has 55 27 = 28 left.
So the answer is 28.