Mr. Rocky went to the market to sell his handmade crafts on a particular week. He was selling jewelry at $30 each and paintings at $100 each. However, he realized the income from the sales wasn't worth the labor and materials he had used, so he decided to increase the price of jewelry by $10 each and the cost of each painting by 20%. Calculate the total price a buyer who takes two pieces of jewelry and five paintings would pay
Let’s work this out in a step by step way to be sure we have the right answer.
680
After increasing the price of a piece of jewelry, the price increased from $30 to $30 + $10 = $40 each.

He also increased the price of each painting by 20 / 100 * 100 = $20.

The total price for buying one painting at the new price is $100 + $20 = $120.

If a buyer purchases two pieces of jewelry, the total cost becomes 2 * $40 = $80.

When the buyer also buys 5 paintings, he pays a total of $120 * 5 = $600.

2 pieces of jewelry and 5 paintings cost $600 + $80 = $680 at the new prices.

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The answer: 680