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zhannawk [14.2K]

3 years ago

13

Explain how you would calculate the cost per second for the Coral Reef Fountain which costs $49.99 and has a burn time of 1 minu

te 35 seconds. The correct answer rounded to the nearest penny is $0.53. Show your work.

1 answer:

lana [24]3 years ago

7 0

<span>The correct answer is: 0.53$ Calculations: $49.99 / 95 seconds = 0.53$</span>

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16% porque all you have to do is multiply 40 by 4% 0.04

7 0

3 years ago

A man sold a fan for Rs. 400. Find the cost price if he incurred a loss of 15%.

statuscvo [17]

Answer:

Cost price of the fan is $\text {Rs. 470.59}$ .

Step-by-step explanation:

Given: A man sold a fan for $\text{Rs.}\:400$ . He incurred a loss of $15\%$ .

To find: The cost price of the fan

Solution:

We have,

Selling price, S.P., of the fan $= \text{Rs.} 400$

Loss $=15\%$

We know that $\text {Loss\%}=\frac{\text{C.P.-S.P.}}{\text{C.P.}}\times100\%$

Now let the C.P. of the fan be $\text{Rs.} \:x$

So, $15=(\frac{x-400}{x})\times 100$

$\implies 15x=100x-40000$

$\implies 100x-15x=40000$

$\implies 85x=40000$

$\implies x=\frac{40000}{85}$

$\implies x= 470.59$

Hence, the cost price of the fan is $\text {Rs. 470.59}$ .

7 0

3 years ago

James has $325 in his savings account. He spends $28 a week. How many, w, weeks until he has $157 left in his account?

otez555 [7]

Answer:

6 weeks

Step-by-step explanation:

Total savings= $325

For every week, his total savings decrease by $28.

Let's form an expression for the amount of money left in his account after w weeks.

325 -28w= 157

28w= 325 -157

28w= 168

<em>Divide by 28 on both sides:</em>

w= 168 ÷28

w= 6

Thus, there are 6 weeks until he has $157.

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2 years ago

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Answer:

Step-by-step explanation:

s=c+mc

s-c=mc

(s-c)/c=m

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago