Kim made soup which contains 75 total ounces of beans. ~The soup has 2 kinds of beans; black and red. ~There are 4 times as many ounces of black then red.

Question

How many ounces of red beans are in the soup <<<< the ending of the Question

Answer 1

The answer is 15. 

 

Let x be number or red. Let 4x be number of black. Altogether, 4x+x=75.  Therefore, 5x=75. By dividing both sides by 5, x=15.