Mumu + mumu=-----------

David sells two calculators for ₹1500 each .He earns a profit of 25% on

notsponge [240]

Answer:

gain = 0

% = 0

Step-by-step explanation:

Profit

He sells one for a profit of 25% That means he sells one of them for 100% + 25% = 125%

₹1500 * 125/100 = ₹187500/100 = ₹1875

Loss

Here he sells it for 25% less than the selling price he wanted.

100% - 25% = 75%

₹1500 * 75/100 = ₹112500/100 = ₹1125

Discussion

He should make ₹1500 + ₹1500 = ₹3000 without either profit or loss.

What he actually accomplishes is ₹1125 + ₹1875 = ₹3000

So he has a net gain (loss) of 0.

The % is 0

8 0

2 years ago

Cameron is a member of a national gardening club. she asked 200 of her fellow members whether they use compost to fertilize thei

krok68 [10]

Using the z-distribution, it is found that the 90% confidence interval for the true proportion of club members who use compost is (0.392, 0.508).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

In this problem, we have a 90% confidence level, hence $\alpha = 0.9$ , z is the value of Z that has a p-value of $\frac{1+0.9}{2} = 0.95$ , so the critical value is z = 1.645.

The estimate and the sample size are given by:

$\pi = 0.45, n = 200$

Hence, the bounds of the interval are:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.45 - 1.645\sqrt{\frac{0.45(0.55)}{200}} = 0.392$

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.45 + 1.645\sqrt{\frac{0.45(0.55)}{200}} = 0.508$

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ4

4 0

1 year ago

Read 2 more answers

A boy spent one-half of his money for a book and one-third of his money for a pen. The remaining $2.25 he saved. How much money

Tema [17]

Let his original money is x

So, $\frac{x}{2}$ + $\frac{x}{3}$ + 2.25 = x
or, $\frac{3x+2x+(6*2.25)}{6} = x$
or, 5x + 13.5 = 6x
or, x = 13.5

So, he had $13.5 originaly.

Thanks!

8 0

3 years ago

Read 2 more answers

\angle a∠aangle, a and \angle b∠bangle, b are complementary angles. \angle a∠aangle, a measures 64^\circ64

Archy [21]

Answer:

If angle a and b are complementary angles, and angle a is 64, complementary equals 90, so 90-64= 26 degrees for angle b.

6 0

3 years ago

Read 2 more answers

What is the answer to this??

Helga [31]