SOLUTION: How much water must be evaporated from 7 qt of a 50% antifreeze solution to produce a 70% solution?
Algebra.Com
Question 833368: How much water must be evaporated from 7 qt of a 50% antifreeze solution to produce a 70% solution?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
How much water must be evaporated from 7 qt of a 50% antifreeze solution to produce a 70% solution?
:
Let w = amt of water to be evaporated
.50(7) = .7(7-w)
3.5 = 4.9 - .7w
.7w = 4.9 - 3.5
.7w = 1.4
w = 1.4/.7
w = 2 qt evaporated
:
Check
.50(7) = .7(5)
RELATED QUESTIONS
How much water must be evaporated from 14 qt of a 45% antifreeze solution to produce a... (answered by richwmiller)
How much water must be evaporated from 17 qt of a 50% antifreeze solution to produce an... (answered by lwsshak3)
How much water must be evaporated from 17 qt of a 55% antifreeze solution to produce a... (answered by josmiceli)
How much water must be evaporated from 15 qt of a 65% antifreeze solution to produce a... (answered by josgarithmetic,lwsshak3)
How much water must be evaporated from 17 qt of a 75% antifreeze solution to produce an... (answered by lwsshak3)
How much water must be evaporated from a 6 qt of a 50% anti freeze solution to produce a... (answered by josgarithmetic)
How much water must be evaporated from 14 qt. of a 65% antfreeze solution to producea 70% (answered by lwsshak3)
How much water must be evaporated from 17qt of a 65% antifreeze solution to produce an... (answered by ikleyn,greenestamps)
How much water must be evaporated from 15 qt of a 65% antifreeze solution to produce a... (answered by ewatrrr)