From age 15 to 80 you look at your phone 3.5 hours every day. How many years is that in one stretch?

How close can you get? Make your own guess and earn points before you look at the answer.

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Show the answer and the reasoning

The answer

9.5 years

Almost 10 years, day and night without a break.

How to get there

1. 65 years × 3.5 hours ÷ 24 hours
2. = 9.5 years

Source: Calculation

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