To find the manufacturer's price, simply multiply the consumer price by (1-[each of the three discounted prices]). At a $275 consumer price, multiply this by (1-.35) * (1-.15) * (1-.05), or (275 * 0.65 * 0.85 * 0.95). This will give a price of approximately $144.34, which is the price the manufacturer will receive for the snowboard.