Question

F the ratio of the sum of first n terms of two



a.P's is (7n + 1) : (4n + 27), find the ratio of their 10th terms.

Answer 1

$\frac{7n + 1}{4n + 27}$

$\frac{7 \times 10 + 1}{4 \times 10 + 27}$

$\frac{70 + 1}{40 + 27}$

$\frac{71}{67}$

Ratio= 71:67