Math, asked by Pragatishaw, 7 months ago

the price of sweater increased by 8% if it's increase price is 1566 . what is the original price​

Answers

Answered by Anonymous
3

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Answered by MrBrainlyBrilliant
9

Given ,

Increased Price = ₹ 1566

Rate of Increase = 8%

To Find :-

The original price.

Ist Method :-

Let the original price be ₹x

8% of x = \dfrac{8 \times x}{100}

therefore 8% of x = \dfrac{2x}{25}

Increased Price = x + \dfrac{2x}{25}

= \dfrac{25x + 2x}{25}

= \dfrac{27x}{25}

Also given that, Increased Price is ₹1566

Therefore, acc to question,

₹1566 = \dfrac{27x}{25}

=> x = \dfrac{1566 \times 25}{27}

=> x = ₹1450

Therefore, Original Price = 1450

2nd Method :-

Let the original price be ₹x

Formula :-

Increased Price = Original Price (1 + {\dfrac{r}{100}})

On Inserting the values in the formula

We get ,

1566 = x(1 + {\dfrac{8}{100}})

1566 = x({\dfrac{100 + 8}{100}})

1566 = {\dfrac{x \times 108}{100}}

x = {\dfrac{1566 \times 100}{108}}

x = 1450

Therefore, Original Price = ₹1450

Short-hands Used :-

IP = Increased Price.

OP = Original Price.

R = Rate.

Acc = According.

  \bf{ \underline{Some Formulae}} \\ \\  \rightarrow  \quad \sf P =  \dfrac{100 \times S.I}{R \times T}  \\  \\  \\  \rightarrow \quad T =  \dfrac{100 \times S.I}{P \times R}  \\  \\  \\  \rightarrow \quad R =  \dfrac{100 \times S.I}{P \times T}  \\  \\  \\  \rightarrow \quad A = P + S.I \\  \\  \\  \rightarrow \quad S.I =  \dfrac{P \times R \times T}{100} \\

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