The day before yesterday, Chris was 7 years old. Next year, she'll turn 10. How is this possible?
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Solution
Dear Student,
This is true if we assume that Chris' birthday is on the 31st of December and today is 1st January. Therefore Chris would be 7 the day before, which is 30th December and turned 8 on the 31st. Therefore, he'll turn 9 this year and 10 the next.