Greenhouse Garden Tools Inc. produces and sells home and garden tools and equipment. A lawn mower has a total cost of $310 per unit, of which $220 is product cost and $90 is selling and administrative expenses. In addition, the total cost of $310 is made up of $160 variable cost and $150 fixed cost. The desired profit is $75 per unit.

Determine the markup percentage on product cost. Round the answer to nearest whole number.