Lindsay practices the guitar 50 minutes on Saturday and 30 minutes on most weekdays. Last week she practiced 140 minutes. How many weekdays did she practice? Write an equation in the form px+q=r

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1 answer

Let's define \( x \) as the number of weekdays Lindsay practiced.

In this case, Lindsay practices:

  • 50 minutes on Saturday
  • 30 minutes on each weekday she practices

So, if she practices \( x \) weekdays, the total time she spends practicing on those days can be expressed as \( 30x \) (since she practices 30 minutes each weekday).

The total minutes she practiced in one week can be represented as: \[ 30x + 50 = 140 \]

Here, \( p = 30 \), \( q = 50 \), and \( r = 140 \).

This gives the equation in the form \( px + q = r \): \[ 30x + 50 = 140 \]