Step-by-step reasoning process: 1 bottle of soap will last for 4 washes and he needs enough bottles for 20 weeks so 20 / 4 = 5 bottles. Each bottle cost $4.00 and he needs 5 bottles so he will spend $4 * 5 = $20.00 on car soap.
The question and answer:
Question and answer: Jake can wash his car with 1 bottle of car wash soap 4 times. If each bottle costs $4.00, and he washes his car once a week for 20 weeks, how much does he spend on car soap?
The answer is 20

Step-by-step reasoning process: The farmer gets 46 x 6 = 276 eggs a week. That gives him 276 / 12 = 23 dozen eggs. In one week, he makes 23 x 3 = $69. In 8 weeks, he makes $69 x 8 = $552.
The question and answer:
Question and answer: A farmer has 46 chickens. Each chicken gives him 6 eggs a week. If he sells a dozen eggs for $3, how much money would he make in 8 weeks?
The answer is 552

Step-by-step reasoning process: Roger will need 13 + 3 + 2 = 18 pouches of trail mix. If you divide the amount of trail mix pouches by the amount in each pack, 18 / 6 = 3 packs of trail mix.
The question and answer:
Question and answer:
It is Roger’s turn to provide a snack for the baseball team after the game and he has decided to bring trail mix. The trail mix comes in packs of 6 individual pouches. Roger has 13 members on his baseball team, plus 3 coaches and 2 helpers. How many packs of trail mix does he need to buy?
The answer is 3