Answers

1. Nathan practiced the piano for 420 minutes each day

   What is a unitary method?

   A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

   Given, Nathan practices the piano for 1260 minutes in 3 weeks.

   ∴ No. of minutes he practiced the piano each day is the total minutes divided by the total no. of days which is,

   = (1260/3) minutes.

   = 420 minutes.

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2. Answer:

   60 minutes per day.

   Step-by-step explanation:

   There are  21 days in 3 weeks.

   So the required rate = 1260/21

   = 60 minutes per day.

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