Question

if price of toothpaste reduced from 25 to 17 .find decrease percentage​

Answer 1

Answer:

decrease in rupees = 25-17 = 8

percentage = 8 × 100 = 800%

hope it helps you

Answer 2

$\sf\Large{\underline{\underline{Answer:-}}}$

$\Longrightarrow$ Percentage decrease = 32%

⠀

$\color{pink}{\textbf{\textsf{explaination}}}$

★ Given,

• Price of toothpaste reduced from 25 to 17.
• Find decrease Percentage.

⠀⠀

Initial price of toothpaste = 25

Price of toothpaste after reduced = 17

Decrease in price = 25 – 17 = 8

⠀⠀

★ Formula using here,

${\sf { \purple{ \boxed{ \sf Percentage \: decrease = \frac{increase}{original \: value} \times 100\%}}}}$

⠀

On Substituting the values, we get

$\begin{gathered}\\\;\sf{:\rightarrow\;\;percentage\;decrease=\;\bf{{ \sf{\dfrac{8}{25} \times 100\%}}\:}}\end{gathered}$

$\begin{gathered}\\\;\sf{:\rightarrow\;\;percentage\;decrease=\;\bf{{ \sf{\dfrac{800}{25}}}\:}}\end{gathered}$

$\begin{gathered}\\\;\sf{:\rightarrow\;\;percentage\;decrease=\;\bf{{ \sf{{32\%}}}\:}}\end{gathered}$

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${\underline{\underline{\sf{\pink{Important \: Formulas:-}}}}}$

$\begin{gathered}\\\;\sf{:\rightarrow\;\;loss\%\;=\;\bf{{ \bigg( \frac{loss}{C.P.} \times 100\bigg)\% }\:}}\end{gathered}$

⠀

$\begin{gathered}\\\;\sf{:\rightarrow\;\;gain\%\;=\;\bf{{ \bigg( \frac{gain}{C.P.} \times 100\bigg)\% }\:}}\end{gathered}$

⠀

To find S.P. when C.P. and profit or loss Per cent are given:-

$\begin{gathered}\\\;\sf{:\rightarrow\;\;S.P.\;=\;\bf{{ \frac{C.P. \times (100 + gain\%)}{100}}\:}}\end{gathered}$

⠀Or

$\begin{gathered}\\\;\sf{:\rightarrow\;\;S.P.\;=\;\bf{{ \frac{C.P. \times (100 - loss\%)}{100} }\:}}\end{gathered}$

⠀

To find C.P. when S.P. and profit or Loss Per cent are given:-

$\begin{gathered}\\\;\sf{:\rightarrow\;\;C.P.\;=\;\bf{{ \bigg( \frac{S.P. \times 100}{(100 + gain\%)} \bigg) }\:}}\end{gathered}$

⠀Or

$\begin{gathered}\\\;\sf{:\rightarrow\;\;C.P.\;=\;\bf{{ \bigg( \frac{S.P. \times 100}{(100 - loss\%)} \bigg) }\:}}\end{gathered}$