The 5% discount amounts to $50 x 5 / 100 = $2.50. So the total discount given to the customer for 4 months was $2.50 x 4 = $10. The customer was supposed to pay $50 x 4 = $200 in all for 4 months without discount. Since the customer is entitled to the discount, then he only paid a total of $200 - $10 = $190 for 4 months.
The answer: 190
Reverse engineering the question: An internet provider gives a 5% discount if the customer pays before the 25th day of the month. If the monthly internet rate is $50, how much did the customer pay in all for 4 months if he paid every 25th of the month?


Reasoning and answer: Robbie gets 3 x 10 = 30 grams of fat every morning. He gets 10 x 2 = 20 grams of fat every afternoon. And he gets 5 x 10 = 50 grams of fat every evening. So, the total grams of fat he gets every day is 50 + 30 + 20 = 100. Therefore, the total grams of fat he gets every week is 100 x 7 = 700.
The answer: 700
What was the question?
Question: Robbie is tracking his nutrition intake per week. He eats 3 cups of rice in the morning, 2 cups of rice in the afternoon, and 5 cups of rice in the evening. If a cup of rice has 10 grams of fat, how many grams of fat does Robbie get in a week?


He burns 2 * 300 = 600 calories an hour. He dances for .5 * 2 = 1 hour per day. So he burns 600 * 1 = 600 calories per day. So he burns 600 * 4 = 2400 calories per week.
The answer: 2400
Reverse engineering the question: James takes up dancing for fitness. He loses twice as many calories per hour as he did when he was walking. He dances twice a day for .5 hours each time and he does this 4 times a week. He burned 300 calories an hour walking. How many calories does he lose a week from dancing?


Reasoning and answer: James lost 2 friends, so he has 20 - 2 = 18 friends left. Then he made 1 friend, James now has 18 + 1 = 19 friends.
The answer: 19
What was the question?
Question: James has 20 friends. Yesterday at work he got into an argument with 2 of his friends. Now he no longer considers them as friends. On his way back home, he made one more friend. So how many friends does James have left?


Winston has 350 cents because 14 x 25 = 350. He spends 50 cents because $1 / 2 = 50 cents. He has 300 cents left at the end.
The answer: 300
Reverse engineering the question: Winston has 14 quarters. He then spends half a dollar on candy. How many cents does he have left?


Hansel makes $30,000 and received a 10% raise so his raise is 30,000 * .10 = $3,000.00. Hansel now makes 30,000 + 3,000 = $33,000 a year. Gretel makes $30,000 and received a 15% raise so her raise is 30,000 * .15 = $4,500.00. Gretel now makes 30,000 + 4,500 = $34,500 a year. If Gretel makes $34,500 a year and Hansel makes $33,000 then Gretel makes 34,500 - 33,000 = $1,500 more a year than Hansel.
The answer: 1500
Reverse engineering the question:
Hansel makes $30,000 a year and just received a 10% raise. Gretel makes the same amount as Hansel but received a 15% raise. How much more money will Gretel make compared to Hansel?