



 
Hi Jack, If you have a selling price of $\$P$ and your profit is 35% of $\$P$ then your cast is 65% of $\$P.$ Thus \[0.65 \times \$P = \$10.00\] Dividing both sides by $0.65$ gives \[\$P = \frac{\$10.00}{0.65} = \$15.38\] Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 