Question

A radio is sold for Rs 3120 at a loss of 4%. What will be the gain or loss per cent if it is sold
for Rs 3445​

Answer 1

Answer:

cholrLogin

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29. A radio is sold for 3120 at a loss of 4%. What will be the gain or loss per cent if it is sold for 3445? 100 each On one she lost 10% while on the other che doinod

Mathematics

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2 Answers

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Sanobar Banik

Grade 8

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Let the original price be .

SP = Rs 3120

Now, SP = CP − loss

So, the cost price is Rs 3250.

If it is sold for Rs 3445, then its a gain because SP > CP.

Now, gain = SP − CP

= Rs (3445 − 3250)

= Rs 195

Hence, gain percent = 6%

Answer 2

Given :-

Selling price of radio at loss of 4% is Rs.3120

To Find :-

Gain or loss% when the selling price of the radio is Rs.3445.

Solution :-

We have ,

Loss% = 4%

Selling price (SP) = Rs.3120

Cost price (CP) = ?

$\begin{gathered} \\ \star \: {\boxed{\sf{\purple{ SP= (1 - \frac{loss\%}{100}) \times CP }}}} \\ \end{gathered}$

Substituting the values we have ,

$\begin{gathered} \\ : \implies \sf \: 3120 =(1 - \frac{4 }{100}) \times CP \\ \\ \end{gathered}$

$\begin{gathered} \\ : \implies \sf \: 3120 = \frac{100 - 4}{100} \times \: CP \\ \\ \end{gathered}$

$\begin{gathered} \\ : \implies \sf \: 3120 = \frac{96}{100} \times CP \\ \\ \end{gathered}$

$\begin{gathered} \\ : \implies \sf \: CP = 3120 \: \times \: \frac{100}{96} \\ \\ \end{gathered}$

$\begin{gathered} \\ \implies \sf \purple{ \: ∵ CP = Rs.3250} \\ \\ \end{gathered}$

Since the change in Cost price is not mentioned . The Cost price will remain constant i.e , Rs.3250.

Selling price = Rs.3445 [Given]

Here (SP) > (CP)

So , There must be a profit.

$\begin{gathered} \\ : \implies \sf \: Profit \: =SP - CP \\ \\ \end{gathered}$

$\implies \sf {profit \: = \: 3445 - 3250} \\ \\ \implies \sf{profit \: = \: 195}$

Profit% of an article is given by ,

$\implies\sf \purple{profit\% \: = \: ( \frac{profit}{CP} \times 100)\% }$

Substituting the values ,

$\begin{gathered} \\ : \implies \sf \: profit\% = \frac{195}{3250} \times 100\%\\ \\ \end{gathered} </p><p>$

$\implies \sf \purple{profit\% \: = \: 6\% \: \: \: (ans)}$

hope it helps you....