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tester [92]
3 years ago
11

Justin has only nickels and quarters in his piggy bank he’s 49 coins total for combined value of $8.85 how many of each type of

coin does he have
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
8 0
17 nickels and 32 quarter.

Here's my work!

x = nickels
y = quarters

x + y = 49

.05x + .25y = 8.85

x + y = 49. = y= -x + 49

.05x +.25( -x + 49 ) = 8.85
.05x + -.25x + 12.25 = 8.85
-.2x + 12.25 = 8.85
- 12.25. -12.25

-.2x = -3.4
÷-.2x. ÷-.2x
x=17

x + y = 49
17 + y = 49
-17. -17

y=32

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