Betty's container of cranberry juice holds 200 milliliters. herbert's container holds 7/8 as much juice. how many milliliters of cranberry juice do the two containers holds?

To answer this question, you need to understand how to change the description into an equation. Let say that Herbert's container volume is H and Betty's container is B. Then, from the problem you can get this equation:
1. B= 200     (Betty's container hold 200 milli liters)
2. H= 7/8 B  (Herbert's container hold 7/8 as much juice)

If you put the 1st equation into the 2nd, you will get:
H=7/8 (200)= 175

Then the two containers will hold
H+B= 200 + 175= 375milli liters