Question

Jerry started doing sit-ups every day. The first day he did 13 sit-ups. Every day after that he did 2 more sit- ups than he had done the previous day. Today Jerry did 29 sit-ups. Write an equation that could be solved to find the number of days Jerry has been doing sit-ups, not counting the first day. Let n represent the number of days.

Answer 1

Y=13+2n
29-13=16
16÷2 =8 days