Question

if the sum of n terms of two AP are in the ratio 3 + 5 / 5 + 7 then their nth term are in ratio of.
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Answer 1

Answer:

5:7

Step-by-step explanation:

sum of n terms in AP-n/2 (a+l)

since n/2 is constant their ratio is 1

so... a1 +l1 = 3+5

a2+l2 5+7

so a1 is 3 and l1 is 5

a2 is 5 and l2 is 7

nth term =a+(n-1)d

ratio of their nth term=3+(2-1)2

5+(2-1)2

=5:7