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Mathematics
0.18c+1.08t=90
In the equation above, if 90 represents the total amount of dollars spent on a purchase of c ounces of copper and t ounces of tin, what is the cost, in dollars, of 1 ounce of tin?
A.0.18
B.1.08
C.6
D.83.33
n. 相等，方程(式), 等式，均衡
