Question

Mr Dominguez spends three weeks training for a marathon. Every day he runs 1/2 mile more than the day before. If the first day he ran 6 miles, how many will he run on the 21st day?

Answer 1

Answer: 16 miles


Step-by-step explanation:
I believe it would be 16 miles, if he starts off at 6 miles on day one and goes up 1/2 mile every day, he would be up a mile every other day, basically on day 3 he would be at 7 and day 5 at 8 miles, if the pattern continues he would be at 16 miles by day 21.