A scientist mixes water (containing no salt) with a solution that contains 35% salt. She wants to obtain 140 ounces of a mixture that is 15% salt. How many ounces of water and how many ounces of the 35% salt solution should she use?

80 ounces water

60 ounces brine

Step-by-step explanation:

Let x be the amount of water

Let y be the amount of brine 35%

The goal is to have salt weight of 140(0.15) = 21 oz.

21 = 0.35y

y = 60 oz

x = 140 - 60 = 80 oz

4444444444444 i think

b

step-by-step explanation:

multiply terms on numerator/ denominator by (x - 1)

= ← distribute numerator/ denominator

= ← simplify

=

= → b