how do you show work
2006-11-01 07:48:46 · 6 answers · asked by cathryncsck 2 in Science & Mathematics ➔ Mathematics
19 Quarters and 27 Nickles.
2006-11-01 08:00:47 · answer #1 · answered by pkababa 4 · 0⤊ 0⤋
Q is # of quarters
N is # of nickels
The value is 25Q + 5N = 610
But N = Q + 8
25Q + 5(Q + 8) = 610
25Q + 5Q + 40 = 610
30Q = 570
Q = 570/30 = 19
N = Q + 8 = 19 + 8 = 27
Check
25Q + 5N = 610
25(19) + 5(27) = 610
475 + 135 = 610
610 = 610
2006-11-01 07:56:39 · answer #2 · answered by kindricko 7 · 1⤊ 0⤋
Use the given information to make equations:
(1) 8 + q = n
(2) .05n + .25q = 6.10
Now rearrange (1), and plug it into (2):
q = n - 8
.05n + .25(n - 8) = 6.10
.05n + .25n - 2 = 6.10
.3n = 8.10
n = 27 (This means Brent has 27 nickels)
8 + q = n
8 + q = 27
q = 19 (This means Brent has 19 quarters)
2006-11-01 07:58:25 · answer #3 · answered by عبد الله (ドラゴン) 5 · 1⤊ 0⤋
question doesn't work. The nickels would have to be an odd number or the total would have to end in 5. Eight nickels is 40 cents. take two nickels away and you are down to $6.00. you are left with six nickels or 30 cents which when subtracted from $6.00 leaves you $5.70 which can't divided by 25 evenly.
2006-11-01 07:55:59 · answer #4 · answered by waggy_33 6 · 1⤊ 0⤋
(8 + N) = Q
(0.05 N + 0.25 Q) + 0.40 = 6.10
The 0.40 is the 8 Nickles more than the Quarters...
N = How many Nickles you have
Q = How many Quarters you have
2006-11-01 08:09:16 · answer #5 · answered by Anonymous · 1⤊ 0⤋
At current exchange rates ca. 5.4 euros or £3.6 , although he can only change notes.
2006-11-01 07:55:55 · answer #6 · answered by Anonymous · 0⤊ 0⤋