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2 years ago

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Rahul sold a painting at 10% profit. If he had sold it for 240 more, he would have made 15% profit. What is the C.P. of the pain

ting?
please tell ans step by step..

1 answer:

dangina [55]2 years ago

6 0

Answer:

$4800

Step-by-step explanation:

Let x be the C.P of the painting.

Profit=10% of x

Profit= $\frac{10}{100}\times x=\frac{10x}{100}$

If S.P increase by 240 then

Profit=15% of x= $\frac{15x}{100}$

For first case

S.P=C.P+ Profit

S.P=x+10x/100

S.P= $\frac{100x+10x}{100}=\frac{110}{100}x$

For second case

New S.P $=x+\frac{15}{100}x$

= $\frac{115}{100}x$

According to question

$240+S.P=\frac{115}{100}x$

$240+\frac{110x}{100}=\frac{115}{100}x$

$240=\frac{115}{100}x-\frac{110x}{100}$

$240=\frac{115x-110x}{100}$

$240=\frac{5}{100}x$

$x=\frac{240\times 100}{5}$

$x=4800$

Hence, the C.P of the painting=$4800

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julia-pushkina [17]

Answer:

Due to the higher z-score, Stewart caught the longer fish, relative to fish of the same species

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Who caught the longer fish, relative to fish of the same species?

Whosoever fish's had the higher z-score.

Stewart caught a bluefish that was 283mm

The mean length of a bluefish is 264 millimeters with a standard deviation of 57mm.

So we have to find Z when $X = 283, \mu = 264, \sigma = 57$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{283 - 264}{57}$

$Z = 0.33$

Gina caught a pompano that was 152mm long.

For pompano, the mean is 157mm with a standard deviation of 28mm.

So we have to find Z when $X = 152, \mu = 157, \sigma = 28$

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3 years ago

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Amanda [17]

Answer:

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Step-by-step explanation:

Data given

$\bar X=33.9$ represent the sample mean

$s=4.1$ represent the sample standard deviation

$n=22$ sample size

$\mu_o =26$ represent the value that we want to test

$\alpha=0.025$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean is less than 36 years old, the system of hypothesis would be:

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And replacing we got:

$t=\frac{33.9-36}{\frac{4.1}{\sqrt{22}}}=-2.402$

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3 0

3 years ago

Oksi-84 [34.3K]

Answer:

189

Step-by-step explanation:

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4 0

3 years ago

40 points right here

trapecia [35]

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2 years ago

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Answer:

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Step-by-step explanation:

we know that

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so

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2 years ago