If an investor receives an after tax dividend rate of return $=3\mathrm{.}84\%$ and has a marginal tax rate of $36\%$

$1.$ What rate of interest would they need to receive on a GIC in order to achieve the same after$-$tax return on their money?

$2.$ What capital gain would they need to receive on an investment in order to achieve the same after tax return on their money?