The sum of the 3rd term and the sum of the 5th term of a G.P is-60 and the sum of the 5th term and 7th is-240 find the common ratio and the first term

Answer 1

If you mean "The sum of the 3rd term and the 5th term of a G.P is -60"
then we have
ar^2 + ar^4 = -60
ar^4 + ar^6 = -240
Dividing, we have
r^2 = 4
Now finish it off

Answer 2

I don't know how to solve it