chemical company makes two brands of antifreeze. The first brand is

60%

pure antifreeze, and the second brand is

85%

pure antifreeze. In order to obtain

140

gallons of a mixture that contains

70%

pure antifreeze, how many gallons of each brand of antifreeze must be used?

Question

Guest

14 December, 21:10

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Answers (1)

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Clare Campos · Answer 1

We have 60% and 85% antifreeze

We need 140 gallons of 70% antifreeze

x + y = 140

.60x +.85y =.70 * 140

X = 84 gallons 60%

Y = 56 gallons 85%

chemical company makes two brands of antifreeze. The first brand is60%pure antifreeze, and the second brand is85%pure antifreeze. In order to obtain140gallons of a mixture that contains70%pure antifreeze, how many gallons of each brand of antifreeze must be used?