A product was marked up $65\%$ by a retailer using the margin pricing method. It is selling at $$49\mathrm{.}99.$ What was its original cost to the retailer? $($Round numbers up to one decimal throughout the calculation$)$

Question $4$ Select one:

a$.$

$$15\mathrm{.}55$

b$.$

$$219\mathrm{.}25$

c$.$

None of these is correct

d$.$

$$17\mathrm{.}50$

e$.$

$$15\mathrm{.}70$