An athlete spends 75 minutes a day on a cardio workout and 60 minutes a day on strength workout. The athlete does the cardio workout 20 days in a month, and the strength workout 25 days in the month. Which equation could be used to find n, the total number of minutes the athlete spends working out in the month?

20 × 75 + 25 × 60 = n

75 × 60 + 20 × 25 = n

20×75−25×60=n

75 + 60 × 25 + 25 = n