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evablogger [386]
3 years ago
13

A scientist has two solutions, which she has labeled Solution A and Solution Each contains salt. She knows that Solution A is 40

% salt and Solution B is 55% salt. She wants to obtain 90 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?
Mathematics
1 answer:
Alexxandr [17]3 years ago
6 0

Answer:

Step-by-step explanation:

Let the number of ounces of

A = x

B = y

A scientist has two solutions, which she has labeled Solution A and Solution Each contains salt. She knows that Solution A is 40% salt and Solution B is 55% salt. She wants to obtain 90 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?

Our system of equations is given as

x + y = 90.... Equation 1

x = 90 - y

40% × x + 55% × y = 45% × 90 ounces

0.4x + 0.55y = 40.5....Equation 2

We substitute 90 - y for x in Equation 2

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<h3>Further explanation</h3>

This is a question about the composition of functions and how to get a domain function.

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