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The number of dimes you have is three times your number of quarters. You have $3.85. How many dimes do you have?

Sagot :

kb265848

Answer:

You have

21

dimes and

7

quarters.

Explanation:

Let

x

be the number of quarters, and

3

x

the number of dimes.

The amount of money you have can be written as

0.25

x

+

0.1

⋅

3

x

=

3.85

.

Now isolate

x

to find the number of quarters:

0.25

x

+

0.1

⋅

3

x

=

3.85

0.25

x

+

0.3

x

=

3.85

0.55

x

=

3.85

x

=

3.85

0.55

=

7

=

the number of quarters.

Then multiply by three to get the number of dimes:

7

⋅

3

=

21

7

⋅

$

0.25

+

21

⋅

$

0.1

=

$

3.85

Step-by-step explanation:

Hope this helped

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