13
QuizMultiple Choice
Unit Test
Question 13 of 25 • TX-College Prep Math A
Carlon plans to evaporate a number of gallons of water from 90 gallons of a 15% salt solution to make a 25% salt solution. Which equation can he use to find x, the number of gallons that should be evaporated? Original (Gallons)Removed (Gallons)New (Gallons)Amount of Salt13.5 0 Amount of Solution90 x
Answer
A
StartFraction 13.5 Over 90 minus x EndFraction = StartFraction 25 Over 100 EndFraction
B
StartFraction 13.5 Over x EndFraction = StartFraction 25 Over 100 EndFraction
C
13.5 (90 minus x) = 0.25
D
13.5 (90 minus x) = 25