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Hoochie [10]
3 years ago
15

Janaya buys a postcard from each travel destination she visits. Before starting her travels this year, Janaya had 20 postcards.

During the year, she added 3 more postcards to her collection.
Mathematics
1 answer:
MrRa [10]3 years ago
4 0

Answer:

The percentage increase in Jayana's postcard collection is 15%

Step-by-step explanation:

Jayana had 20 postcards last year

With 3 more postcards this year

From the given equation Quantity = Percent x Whole

Here;

Let P = Percent/100%

Quantity = Increment in postcard = 3 postcards

Whole = The total postcards from last year = 20 postcards

Hence,

3 postcards = P x 20 postcards

P = 3/20 = 0.15

Recall P = Percent/100%

∴ Percent = P x 100% = 0.15 x 100% = 15%

The percentage increase in Jayana's postcard collection is 15%

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3 years ago
What is the value of x?<br> 4x+2-(3+3x)=7
PolarNik [594]

Answer:

x= 8

Step-by-step explanation:

Step 1- Distribute into the parenthesis by 1.

4x+2+3(-1)+3(-1)x= 7

Step 2- Simplify.

4x+2-3-3x= 7

Step 3- Add common variables.

(4x-3x)+(2-3)

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Step 4- Add 1 to both sides.

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Step 5- Divide both sides by 1.

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1    1

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3 years ago
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avanturin [10]
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olga55 [171]

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