SOLUTION: The sum of the first 50 positive integers is 1 275. What is the sum of the integers from 51 to 100.
a)2550 b) 3250 c) 3775 d) 5050
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Question 276006: The sum of the first 50 positive integers is 1 275. What is the sum of the integers from 51 to 100.
a)2550 b) 3250 c) 3775 d) 5050
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The sum of the first 50 positive integers is 1 275. What is the sum of the integers from 51 to 100.
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Arithmetic Series with a = 51, d = 1, n = 50
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S(50) = (50/2)(51+100) = 25*151 = 3775
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Cheers,
Stan H.
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a)2550 b) 3250 c) 3775 d) 5050
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The sum of the first 50 positive integers is 1 275. What is the sum of the integers from 51 to 100.
a)2550 b) 3250 c) 3775 d) 5050
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Each number of the 2nd group is 50 more than the corresponding number of the 1st group:
1 - 51
3 - 53, etc
There are 50 of them. 50*50 = 2500
add 2500 to 1275
= 3775
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