Problema Solution
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is
40%
salt and Solution B is
90%
salt. She wants to obtain
170
ounces of a mixture that is
55%
salt. How many ounces of each solution should she use?
Answer provided by our tutors
Let
a = oz of the solution A
b = oz of the solution B
She knows that solution A is 40% salt and solution B is 90% salt. She wants to obtain 170 ounces of a mixture that is 55% salt.
a + b = 170
0.40a + 0.90b = 0.55*170
........
click here to see the system of equations solved for a and b
........
a = 119 oz
b = 51 oz
She should use 119 ounces of solution A and 51 ounces of solution B.