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Question Detail
A TV is purchased at Rs. 5000 and sold at Rs. 4000, find the lost percent.
 10%
 20%
 25%
 28%
Answer: Option B
Explanation:
We know, C.P. = 5000
S.P. = 4000
Loss = 5000  4000 = 1000
\begin{aligned}
Loss\% = \left( \frac{Loss}{Cost} * 100 \right)\% \\
= \left( \frac{1000}{5000} * 100 \right)\% = 20\%
\end{aligned}
1. If the cost price of 12 pens is equal to the selling price of 8 pens, the gain percent is ?
 12%
 30%
 50%
 60%
Answer: Option C
Explanation:
Friends, we know we will need gain amount to get gain percent, right. So lets get gain first.
Let the cost price of 1 pen is Re 1
Cost of 8 pens = Rs 8
Selling price of 8 pens = 12
Gain = 12  8 = 4
\begin{aligned}
Gain\% = \left( \frac{Gain}{Cost} * 100 \right)\% \\
= \left( \frac{4}{8} * 100 \right)\% = 50\%
\end{aligned}
2. A TV is purchased at Rs. 5000 and sold at Rs. 4000, find the lost percent.
 10%
 20%
 25%
 28%
Answer: Option B
Explanation:
We know, C.P. = 5000
S.P. = 4000
Loss = 5000  4000 = 1000
\begin{aligned}
Loss\% = \left( \frac{Loss}{Cost} * 100 \right)\% \\
= \left( \frac{1000}{5000} * 100 \right)\% = 20\%
\end{aligned}
3. The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, find out the value of x
 13
 14
 15
 16
Answer: Option D
Explanation:
Let the Cost Price of one article = Rs. 1
CP of x articles = Rs. x
CP of 20 articles = 20
Selling price of x articles = 20
Profit = 25% [Given]
\begin{aligned}
\Rightarrow \left (\dfrac{SP  CP }{CP}\right ) = \dfrac{25}{100} = \dfrac{1}{4}
& \Rightarrow \dfrac{\left(20x \right )}{x} = \dfrac{1}{4} \\
& \Rightarrow 80  4x = x \\
& \Rightarrow 5x = 80 \nonumber \\
& \Rightarrow x = \dfrac{80}{5} = 16 \\
\end{aligned}
4. Sahil purchased a machine at Rs 10000, then got it repaired at Rs 5000, then gave its transportation charges Rs 1000. Then he sold it with 50% of profit. At what price he actually sold it.
 Rs. 22000
 Rs. 24000
 Rs. 26000
 Rs. 28000
Answer: Option B
Explanation:
Question seems a bit tricky, but it is very simple.
Just calculate all Cost price, then get 150% of CP.
C.P. = 10000 + 5000 + 1000 = 16000
150% of 16000 = 150/100 * 16000 = 24000
5. Alfred buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, his gain percent is
 \begin{aligned} \frac{6}{19}\% \end{aligned}
 \begin{aligned} \frac{6}{17}\% \end{aligned}
 \begin{aligned} 5\frac{5}{11}\% \end{aligned}
 \begin{aligned} 3\frac{5}{11}\% \end{aligned}
Answer: Option C
Explanation:
Whenever we get this type of question, we should have formula in mind that,
Gain% = (gain/cost)*100
Cost = 4700 + 800 = Rs. 5500
S.P. = Rs. 5800
Profit = 5800  5500 = 300
\begin{aligned}
Gain\% = \frac{300}{5500}*100 \\
= 5\frac{5}{11}\%
\end{aligned}
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