Jenica has $4.50 in dimes and quarters. She has 1 more than three as many quarters as dimes. How many quarters does she have?

Laura has $4.50 in dimes and quarters she has 3 more dimes than quarters How many quarters does she have

She has 3 more dimes than quarters. How many quarters does she have? Laura has 15 dimes and 12 quarters.

Step-by-step explanation:

12 quarters

Step-by-step explanation:

Thus :  

0.1

a

+

0.25

b

=

4.5

And we know that she has 3 more dimes than quarters

Thus :

a

=

b

+

3

We just replace the value of a in the equation :

0.1

⋅

(

b

+

3

)

+

0.25

b

=

4.5

0.1

b

+

0.3

+

0.25

b

=

4.5

0.1

b

+

0.25

b

=

4.5

−

0.3

( we substract 0.3 on each side )

0.35

b

=

4.2

b

=

4.2

0.35

( we divide by 0.35 on each side )

b

=

12

: Laura has

12

quarters

We can now get

a

:

0.1

a

+

0.25

b

=

4.5

0.1

a

+

0.25

⋅

12

=

4.5

0.1

a

+

3

=

4.5

0.1

a

=

4.5

−

3

( we substract 3 on each side )

0.1

a

=

1.5

a

=

1.5

0.1

( we divide by 0.1 on each side )

a

=

15

: Laura has

15

dimes

We can now verify :

15

⋅

0.1

+

12

⋅

0.25

=

1.5

+

3

=

4.5

: correct !

And

15

=

12

+

3

, so Laura has

3

more dimes than quarters

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

the data of the detroit pistons in numerical order from least to greatest is 0.30, 0.37, 0.55, 0.62, 0.69, 0.72, 0.73, 0.75, 0.77, 0.78, 0.80, 0.81, 0.81, 0.83, 0.84, 0.89

the data of the miami heat in numerical order from least to greatest is 0.50, 0.50, 0.56, 0.57, 0.67, 0.72, 0.72, 0.72, 0.75, 0.75, 0.76, 0.81, 0.82, 0.90, 1.00, 1.00

the detroit pistons median : 1.52

the miami heat median: 1.47

the iqr of this data is 0.05