find k so that, 2/3, k, 5k/8 are in AP
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/if-x-1-3x-and4x-2-are-in-ap-find-the-value-of-x/arithmetic-progressions/3579518
Regards
https://www.meritnation.com/ask-answer/question/if-x-1-3x-and4x-2-are-in-ap-find-the-value-of-x/arithmetic-progressions/3579518
Regards