jada has some dimes and quarters that had a total value of 12.50. The relationship between the number of dimes D and the number of quarters Q can be expressed by the equation 0.1d +0.25q = 12.50.

Answer 1

10d +25q = 1250

assuming "some" of each, means 115>d>2, 48>q>2

and d & q are integers

that narrows the possibilities down to about 27 combinations

there may be some more informtion missing from the problem that would

elimnate them all, except one

dimes quarters

5 1200/25 = 48

10 1150/25 = 46

15 44

20 42

25 40

30 38

35 36

40 34

45 32

50 30

55 28

60 26

...

105 8

110 6

115 4

if there is one more quarter than the number of dimes

about as equal as it gets, then

it's 36 quarters and 35 dimes

$9+$3.50 = $12.50