sgtbowhunter sgtbowhunter

06-06-2015
Mathematics

contestada

A dairy needs 360 gallons of milk containing 4% butterfat. How many gallons each of milk containing 5% butterfat and milk containing 2% butterfat must be used to obtain the desired
360 gallons?

Respuesta :

seanjpowers1 seanjpowers1

06-06-2015

If the amount of 5% is x, the amount of 2% is 360-x

.05x + .02(360 - x) = .04 x 360

.05x + 7.2 -.02x = 14.4

.03x = 7.2

x = 240

240 gallons of 5%
120 gallons of 2%

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