Grade 1010 grade maths
the sum of n terms of two ap are in the ratio 5n-3:4n+18.ratio of their 11 terms is?
the sum of n terms of two ap are in the ratio 5n-3:4n+18.ratio of their 11 terms is?
1 Answer
Kruthik
Give that the ratio of sum of n terms of an AP is 5n-3:4n+18.
So, sum of 11 terms will 5(11) – 3 : 4(11) + 18, or 52:62, ie. 26:31.
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