1. **State the problem:** Elsie bought a video game for 85. The store charges 170% of its cost for the game. We need to find the store's profit. 2. **Understand the terms:** - Cost price (C) = 85 - Selling price (S) = 170% of cost price = 1.7 \times C - Profit = Selling price - Cost price 3. **Calculate the selling price:** $$S = 1.7 \times 85$$ 4. **Calculate the profit:** $$\text{Profit} = S - C = 1.7 \times 85 - 85$$ 5. **Simplify the profit expression:** $$\text{Profit} = 85 \times (1.7 - 1) = 85 \times 0.7$$ 6. **Calculate the final profit:** $$\text{Profit} = 59.5$$ **Answer:** The store's profit is 59.5.