SOLUTION: Good Afternoon, I need help understanding how to work algebra word problems. 1) $5400 is invested, part of it at 11% and part of it at 6%. For a certain year, the total yield

Question 1011344: Good Afternoon,
I need help understanding how to work algebra word problems.
1) $5400 is invested, part of it at 11% and part of it at 6%. For a certain year, the total yield is $474.00. How much was invested at each rate?
2) One day a store sold 19 sweatshirts. White ones cost $10.95 and yellow ones cost $12.50. In all $229.75 worth of sweatshirts were sold. How many of each color were sold?
Thanking you in advance
Betty
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
The two questions are similar, but here is just #2.

w white ones and y yellow ones;

The money equation both members divided by 0.05,

Use substitution with y=19-w;

Here is how you can start #1:
x at the lower rate, 5400-x at the higher rate;
, to use just one variable instead of two variables.
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