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The sum of n terms of …

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The sum of n terms of two arithmetic progressions are in the ratio ( 3n+8) : (7n+15). Find the ratio of their 12th term
  • 2 answers

Priya Dharshini ☺☺ 7 years, 3 months ago

I hope this is correct

Priya Dharshini ☺☺ 7 years, 3 months ago

The ratio of the sum of two ap is obtained by replacing n by (2n-1) 2*12-1=23. Value of n is 23 now substitute in ratio 3n+8 and 7n+15 hence u will get 7:16
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