Question: Amy and Judy sold 12 show tickets altogether. Amy sold 2 more tickets than Judy. How many tickets did each girl sell?
What do you need to find?
You need to know that 12 tickets were sold in all. You also need to know that Amy sold 2 more tickets than Judy.
How can you solve the problem?
You can guess and check to find two numbers with a sum of 12 and a difference of 2. If your first guess does not work, try two different numbers.
Amy = 8 tickets
Judy = 4 tickets
8 + 4 = 12
8 – 4 = 4 ( Amy sold 4 more tickets)
These numbers do not work!
Amy = 7 tickets
Judy = 5 tickets
7 + 5 = 12
7- 5 = 2 ( Amy sold 2 more tickets)
These numbers do work!
Amy sold 7 tickets and Judy sold 5 tickets.
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