A salesman bought 2 dozen television sets at $300 each. He sold two-thirds of them at a 25% proﬁt but was forced to take a 30 % loss on the rest. What was his total proﬁt (or loss) on the television sets?
Well, the first 16 were about 16*75=$1200 extra. The last 8 were $720 lost. Thus, the total profit is $480. He bought them with $7200, which means the profit is around 6.67%.