There are 350 x 70 / 100 = 245 pine trees. Therefore, 350 - 245 = 105 trees are not pine trees.
The answer: 105
Reverse engineering the question: There are 350 trees in the park, 70% of which are pine trees. How many are not pine trees?


Reasoning and answer: The rancher would have sold his cattle for $204,000 / 340 = $600 per head. He was left with a remainder of 340 - 172 = 168 head of cattle. The lowered price is $600 - $150 = $450 per head. He would make $450 x 168 = $75,600 at the lowered price. He could have made $600 x 168 = $100,800 at the original price. He would lose $100,800 - $75,600 = $25,200.
The answer: 25200
What was the question?
Question: A rancher has 340 head of cattle. He was about to sell them all for $204,000 when 172 of them fell sick and died. Because of the sickness, his customers lost confidence in his cattle, forcing him to lower his price by $150 per head. How much money would the devastated farmer lose if he sold the remaining cattle at the lowered price compared to the amount he would have made by selling them at the original price?


Mary originally had 8 screws, then went to buy twice more screws and ended up with 8 + (8 * 2) = 24 of them. She then split them into four piles of 24 / 4 = 6.
The answer: 6
Reverse engineering the question: Mary only has 8 screws on hand and needs to buy 2 times more to fix her sink. When she is beginning repairs, she has to split the screws into four sections. How many are in each pile?


Reasoning and answer: Ryan owns $48 x 2 / 3 = $32 of the $48. While Leo owns $48 - $32 = $16 of the $48. Leo had $16 + $10 = $26 after Ryan paid him $10. But since he owed Ryan $7, then Leo has $26 - $7 = $19.
The answer: 19
What was the question?
Question: Leo and Ryan together have $48. Ryan owns 2/3 of the amount. Leo remembered that Ryan owed him $10 but he also owed Ryan $7. After the debts had been settled, how much money does Leo have?


In two weeks, he has to do 24 chores because 2 x 12 = 24. He now does 28 chores a week because 7 x 4 = 28. He does 56 chores in two weeks because 2 x 28 = 56. He has done 32 extra chores because 56 - 24 = 32. He earns $64 because 2 x 32 = 64.
The answer: 64
Reverse engineering the question: Edmund is buying a new computer and needs to save up $75 before he has enough. He convinces his parents to pay him for extra chores. He normally has to do 12 chores a week. His parents agree to pay him $2 for every extra chore he does during the week. If he does 4 chores a day for two weeks, how much does he earn?


In total, the 12 croutons have 20 calories / crouton * 12 croutons = 240 calories. Together, the croutons, lettuce and cucumber have 240 + 30 + 80 = 350 calories.
The answer: 350
Reverse engineering the question:
Jason is making a salad. The lettuce has 30 calories, the cucumber has 80 calories, and the 12 croutons have 20 calories each. How many calories are in the salad?