Algebra

a laptop charges up by 15 % every 20 minutes. How much charged will be after two hours?

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  1. In every hour, there are 3 sets of 15 minute blocks. So in 2 hrs, there are 8 sets. What is 8x15%?

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  2. Wait. Mistake.

    In each hour, there are 3 sets of 20 minutes. 2 hours has 6 20 minute sets.

    6x15% = ?

    (Sorry)

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