Step-by-step reasoning process: The discount on the shoes Marcus found is 120 * 30 / 100 = $36. That means he only had to pay 120 - 36 = $84. So Marcus was able to save 130 - 84 = $46.
[Q & A] The question is Marcus wants to buy a new pair of shoes. He decided to pay not more than $130 for them. He found a pair for $120, on which he got a discount of 30%. How much money will he manage to save by buying these shoes and not spending the assumed maximum amount?
The answer is 46

Step-by-step reasoning process: Javier = 50 * 7 = 350 minutes. Sanda = 90 * 3 = 270 minutes. Total = 350 + 270 = 620 minutes. Together Javier and Sanda exercised for 620 minutes.
[Q & A] The question is Javier exercised for 50 minutes every day for one week. Sanda exercised for 90 minutes on each of three days. How many minutes did Javier and Sanda exercise in total?
The answer is 620

Step-by-step reasoning process: He has 2 + 1 = 3 umbrellas. That means he paid 3 * 8 = $24.
[Q & A] The question is John has 2 umbrellas in his house and 1 in the car. If they cost $8 each, how much did he pay in total?
The answer is 24

Step-by-step reasoning process: In 4 months, he will lose 3 x 4 = 12 kilograms. So his weight will be 97 – 12 = 85 kilograms.
[Q & A]
The question is A boxer weighs 97 kg at 4 months from a fight. He is on a diet that allows him to lose 3 kg per month until the day of the fight. How much will he weigh on the day of the fight?
The answer is 85