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3 years ago

Carey needs $45 to buy her mother a gift. She has saved 22% of that amount so far. How much more money does she need?

Mathematics

2 answers:

Arisa [49]3 years ago

6 0

Answer: She needs $35.10

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Money needed :$45

Money saved : 22%

So, to calculate the amount of money saved we have to multiply the mone needed (45) by 0.22 (decimal form, 22/100=0.22)

45 x 0.22 = 9.9

Finally we subtract the result to the money needed.

45-9.9 =35.10

She needs $35.10

krek1111 [17]3 years ago

4 0

$35.10
22% = 0.22
45(0.22) = 9.90
She has saved $9.90
45 - 9.9 = 35.1

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Given:

The given sets are:

Set a : 200, 104, 100, 160.

Set b: 270, 400, 483, 300, x.

Mean of set a: mean of set b= 3:8

To find:

The value of x.

Solution:

Formula for mean:

$Mean=\dfrac{\text{Sum of observations}}{\text{Number of observation}}$

The mean of set of a is:

$Mean=\dfrac{200+104+100+160}{4}$

$Mean=\dfrac{564}{4}$

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$Mean=\dfrac{270+400+483+300+x}{5}$

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It is given that,

Mean of set a: mean of set b= 3:8

$\dfrac{141}{\dfrac{1453+x}{5}}=\dfrac{3}{8}$

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Isolate the variable x.

$5640-4359
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Divide both sides by 3.

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Therefore, the value of x is 427.

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