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neonofarm [45]
3 years ago
10

A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount. If a jacket cos

ts the shopkeeper $200, at what price is it sold?
Mathematics
1 answer:
IgorC [24]3 years ago
8 0
Marked price = 200 + 40% of 200 = 200 * 0.4*200 = 200 + 80 = $280 price after 25% discount = 280 - 0.25*280 can you work that out?
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Answer:

     x = 5/2

Step-by-step explanation:

2^x+4 = 2^3x-1

x + 4 = 3x - 1

3x - x  = 4 + 1

2x   = 5

     x = 5/2

3 0
3 years ago
Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n equals
Alekssandra [29.7K]

Answer:

(0.767,0.833)

Step-by-step explanation:

The 95% confidence interval for population proportion p can be computed as

p-z_{\frac{\alpha }{2} } \sqrt{\frac{pq}{n} }

The z-value associated with 95% confidence level is 1.96.

whereas p=x/n

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p=440/550=0.8

0.8-1.96\sqrt{\frac{0.8(0.2)}{550} }

0.8-1.96\sqrt{\frac{0.16}{550} }

0.8-1.96\sqrt{0.00029 }

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0.8-0.03343

0.76657

Thus, the required confidence interval is

0.767<P<0.833  (rounded to 3 decimal places)

Hence, we are 95% confident that our true population proportion will lie in the interval (0.767,0.833)

3 0
3 years ago
Which fraction is greater 9/12 or 1/3
ValentinkaMS [17]
We need to first find a common denominator. This means that we need the 12 and the 3 to be the same number. We can change the 1/3 into 4/12 and see that 9/12 is larger than 4/12.
6 0
3 years ago
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sdas [7]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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padilas [110]

Answer:

It is a 40% increase

Step-by-step explanation:

So first of all the formula is

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350-210=140

140/350 which is old is 2/5

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So 40 percent increase

4 0
3 years ago
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