Lizzy: Elizabeth wants to buy the steak knives from a bridal registry as a wedding gift. The couple registered for 2 steak knife sets and each set contains 4 steak knives. If Elizabeth buys both sets and they cost $80.00 per set, how much does each single steak knife cost?.
Me: Hmmm, let me think. I think this is the detailed solution:
Each steak knife set has 4 steak knives and Elizabeth bought 2 sets so there are 4 * 2 = 8 steak knives in total. Each steak knife set costs $80.00 and she bought 2 sets so she spent $80 * 2 = $160.00. Both sets cost $160.00 and there are 8 knives in total so each knife costs 160 / 8 = $20.00 each. Final answer: 20.