Daniela has a container full of marbles. She gives away some of her marbles every day for five days. Each day, she has 1/4 the number of marbles she had a previous day. What fraction of the original number of marbles does Daniela have left after five days?

Respuesta :

Given:

Daniela gives away some of her marbles every day for five days.

Each day, she has [tex]\dfrac{1}{4}[/tex] the number of marbles she had a previous day.

To find:

The fraction of the original number of marbles Daniela have left after five days.

Solution:

Let the origin number of marble be x.

Number of marbles after one day = [tex]\dfrac{1}{4}x[/tex]

Number of marbles after two days = [tex]\dfrac{1}{4}(\dfrac{1}{4}x)[/tex]

                                                        = [tex](\dfrac{1}{4})^2x[/tex]

Similarly,

Number of marbles after three days = [tex](\dfrac{1}{4})^3x[/tex]

Number of marbles after four days = [tex](\dfrac{1}{4})^4x[/tex]

Number of marbles after five days = [tex](\dfrac{1}{4})^5x[/tex]

                                                         = [tex]\dfrac{1}{1024}x[/tex]

Since, [tex]\dfrac{1}{1024}[/tex] is multiplied with x, therefore, the number of marbles Daniela have left after five days is [tex]\dfrac{1}{1024}[/tex] part of original number of marbles.

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