Find Z

You are given: (i) The present value of an annuity-due that pays 250 every 3 months during the first 12 years and (ii) The present value of a 12-year deferred annuity-due that pays 290 every 3 months for 12 years ili) The present value of an annuity-due that pays 90 every 3 months during the first 12 years and 100 every 3 months during the second 12 years is 5500; is 1298; and 180 every 3 months during the next 12 years is Z