Lucky originally had 1 lucky stone. He had 3 friends. Each friend gave him 2 lucky stones. How many lucky stones does Lucky have now?
Answer
7
The correct answer is 7 — Lucky now has 7 lucky stones.
Step-by-step solution
- Start with Lucky's original stone: stone.
- Each of the friends gives stones: stones.
- Add the received stones to the original: stones.
- Lucky now has 7 lucky stones.
Common mistake: forgetting to add the original stone
Concept tested: basic addition
Published · How this solution was prepared and checked
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