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given the sum of the first 5 terms of an arithmetic progression is -10 and the sum of the second 5 terms is -160. calculate the first term and the common difference of the progression .

given the sum of the first 5 terms of an arithmetic progression is -10 and the sum of the second 5 terms is -160. calculate the first term and the common difference of the progression .

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1 Answers

Aman Bansal
592 Points
8 years ago

Dear Aira,

The sum of the first n terms of an arithmetic progression is na%2B%28n%28n-1%29r%29%2F2
Apply this formula twice to get the answer.

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