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
65%
salt and Solution B is
90%
salt. She wants to obtain
110
ounces of a mixture that is
80%
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 65% salt and solution B is 90% salt. She wants to obtain 110 ounces of a mixture that is 80% salt.
a + b = 110
0.65a + 0.90b = 0.80*110
........
click here to see the system of equations solved for a and b
........
a = 44 oz
b = 66 oz
She should use 44 ounces of solution A and 66 ounces of solution B.