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Asked by Anonymous

The given series has six terms. What is the sum of the terms of the series?
10 + 25 + 40 + . . . + 85
8 years ago

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Answered by Steve
a=10
d=15

S6 = 6/2 (2a+5d)
8 years ago
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The given series has six terms. What is the sum of the terms of the series?
10 + 25 + 40 + . . . + 85

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