SOLUTION: An arithmetic sequence has a 10th term of 15 and 14th term of 35 what is the common difference?

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Question 1150555: An arithmetic sequence has a 10th term of 15 and 14th term of 35 what is the common difference?
Answer by ikleyn(52756) About Me  (Show Source):
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In the number line, there are 4 gaps between  a%5B10%5D  and  a%5B14%5D;


hence, each gap is  %2835-15%29%2F4 = 20%2F4 = 5 units long.


The length of each gap is the value of the common difference of this AP.


ANSWER.  The common difference of this AP is 5 units.