Answer:
6.218%
Explanation:
we can use the present value of an annuity due formula:
present value = annual payment x annuity due factor
100 = 7 x annuity factor
annuity factor = 100 / 7 = 14.28571429 ≈ 14.286
using an annuity calculator, the interest rate for a PV annuity factor, 30 periods and equal to 14.286 is 6.218%