Answer:
540
Step-by-step explanation:
Amount of antifreeze in the 90% solution + amount of antifreeze in the 20% solution = amount of antifreeze in the 80% solution
0.90 x + 0.20 (90) = 0.80 (x + 90)
0.90 x + 18 = 0.80 x + 72
0.10 x = 54
x = 540
You need 540 gallons of 90% antifreeze solution.
Answer:
4/8 or 1/2
Step-by-step explanation:
7/8-3/8= 4/8 or 1/2
Pretty sure it's 0, if you mean 2 to the power of 0
According to the priority level of their service level packages and problems,the technician visit the customers visits in the following order.
1) Platinum service level
2) Gold Service level
3) <span>Silver service level
4) Bronze service level
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