contestada

The fees for a computer course is increased from $ 30
to $ 36 per month. Find the percentage increase in
the fee
(a).15&%
(b).20%
(c).25%
(d).30%

Respuesta :

WindyMint

Given :-

  • Original price = $ 30
  • Increased price = $36

[tex] \\ \\ [/tex]

To find:-

  • Increased percentage

[tex] \\ \\ [/tex]

First let's find increase in price :-

  • Increase = Increased price - Original price
  • Increase = 36 - 30
  • Increase = $6

[tex] \\ [/tex]

[tex] \boxed{ \rm increase\% = \frac{increase}{original \: price} \times 100 }[/tex]

[tex] \\ \\ [/tex]

So:-

[tex] \\ [/tex]

[tex] \dashrightarrow \rm increase\% = \sf \dfrac{increase}{original \: price} \times 100 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \rm increase\% = \sf \dfrac{6}{30} \times 100 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \rm increase\% = \sf \dfrac{6}{3\cancel0} \times 10\cancel0 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \rm increase\% = \sf \dfrac{6}{3} \times 10 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \rm increase\% = \sf \cancel\dfrac{6}{3} \times 10 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \rm increase\% = \sf 2\times 10 \\ [/tex]

[tex] \\ \\ [/tex]

[tex] \dashrightarrow \bf increase\% = 20\%[/tex]

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