Step-by-step reasoning process: Cherry earns $2.50 x 4 = $10 after delivering four 5 kilograms of cargo per day. She earns $4 x 2 = $8 after delivering two 8 kilograms of cargo per day. So, her total earning per day is $8 + $10 = $18. Therefore, she will earn $18 x 7 = $126 in a week.
[Q & A] The question is Cherry put up a delivery service. She charges $2.50 for a 3-5 kilograms cargo and $4 for a 6-8 kilograms cargo. If she delivers four 5 kilograms cargo and two 8 kilograms cargo per day, how much money will she earn in a week?
The answer is 126

Step-by-step reasoning process: Marlon gave Emily 42 x 2 / 3 = 28 lollipops. So, he only had 42 - 28 = 14 lollipops left. After keeping 4, Marlon gave 14 - 4 = 10 lollipops to Lou.
[Q & A] The question is Marlon had 42 lollipops in the beginning. On his way home, he saw Emily and gave her 2/3 of his lollipops. Then, Marlon kept 4 lollipops and gave the rest to Lou. How many lollipops did Lou receive?
The answer is 10

Step-by-step reasoning process: The 2nd competitor ate twice the amount of the 1st competitor's 12 hot dogs So he ate 2 * 12 = 24 hot dogs. The 3rd competitor ate 25% less than the 2nd's 24 hot dogs, which is 24 / 4 = 6 hot dogs. If the 2nd competitor ate 24 hot dogs, and the 3rd ate 25% less than that, then the 3rd competitor ate 24 - 6 = 18 hot dogs.
[Q & A] The question is During the hot dog eating contest, the 1st competitor ate 12 hot dogs in 3 minutes. The 2nd competitor ate twice that amount and the 3rd competitor ate 25% less than the 2nd competitor. How many hotdogs did the 3rd competitor eat?
The answer is 18

Step-by-step reasoning process: The profit Ronald wants is $3000 / 3 = $1000. The profit per phone sold will be $1000 / 200 phones = $5 / phone. The cost of each phone is $3000 / 200 phones = $15 / phone. The selling price including the profit will be $15 / phone + $5 / phone = $20.
[Q & A]
The question is Ronald wants to make profits by re-selling some phones he bought a week ago. He bought 200 units for just $3000, and he wants to gain a third of the initial investment in profits when all units are sold. Including the profit margin, what will be the selling price for each phone?
The answer is 20