Problema Solution
You have 5 milliliters of a drink that contains 43% Caffeine. How many milliliters of a drink containing 97% Caffeine needs to be added in order to have a final drink that is 79% Caffeine?
Answer provided by our tutors
Let
x = milliliters of a drink containing 97% caffeine
0.43*5 + 0.97x = 0.79(5 + x)
........
click here to see the step by step solution for x
........
x = 10 ml
10 milliliters of a drink containing 97% caffeine needs to be added.