Bob has 60 coins consisting of quarters and dimes. The coins combined value is $13.35. How many quarters and how many dimes does he have?

D + Q = 60

.10d + .25q = 13.35

.10(60+Q) + .25q= 13.35

6 + .15q = 13.35

.15q = 7.35

Q = 49

D + 49 = 60

D = 11

Bob has 49 quarters and 11 dimes.

Step-by-step explanation:

The process of substitution was used to solve this problem.

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

two data sets with the same median will not have the same varaibility

step-by-step explanation: