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

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

just took the test and my answers down below!

step-by-step explanation:

check the pic :