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Inga [223]
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. ​​​​The percent increase in Janaya's number of postcards from last year to this year is %. ​Use the equation Quantity = Percent × Whole to arrive at your
Mathematics
1 answer:
garik1379 [7]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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