10. A jar contains dimes and quarters. There are 15 more quarters than dimes. The coins total $23. How many of each coin is in the jar?
What is this question asking you?
Dimes
Quarters
Number of Dimes:
Number of Quarters:

dimes:$8  quarters:$15

Step-by-step explanation:

im still in 6th grade

55 dimes and 70 quarters

Step-by-step explanation:

Using a simple strategy of guess and check we know that the quarters will always be 15 more than dimes.  From this we know it has to be around the 50s as 40s would bring us numbers too low and 60s too high.  55 happens to be answer for dimes as that brings in $5.50. 23-5.5=17.5 multiply that by 4 as each quarter is only valued at $0.25 you get the answer 70 which just so happens to meet the requirements of being 15 more than 55.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

the answer is d

step-by-step explanation: