Sal sells dolls for $100 each. She sold 200 last year to
earn $3000. Now she charges 15% more, but sells 30% less. Does her profit
increase or decrease? Her cost is $85 per doll, new price $115, increases
profit from $15 to 30, selling 140 instead of 200, she makes $4200, a 40%
increase.
= free = members only