Q: John sells 20 woodburning for $15 each. The wood cost $100. How much does he make in profit?
A: He sells the woodburning for 20 * 15 = $300. So he makes a profit of 300 - 100 = $200. The answer is 200.

Q: Toms car gets 50 miles to the gallon. He drives 75 miles per day. If gas is $3 per gallon how much does he spend on gas in 10 days?
A: He drives 75 * 10 = 750 miles. So he uses 750 / 50 = 15 gallons. That means he spends 15 * 3 = $45 on gas. The answer is 45.

Q: I went to the music shop and there were CDs of The Life Journey for $100, A Day a Life for $50, and When You Rescind for $85 on display. If I bought 3 of each CD to share with my friends, what's the total amount of money I spent in the shop?
A:
The total cost of The Life Journey is 3 × $100 = $300. The total cost of When You Rescind is 3 × $85 = $255. The total cost of A Day a Life is 3 × $50 = $150. The total cost for all the CDs is $150 + $255 + $300 = $705. The answer is 705.