Ask Question
23 October, 18:05

A 12-oz cup of regular coffee at Starbucks has 13 times the amount of caffeine found in the same-sized serving of decaffeinated coffee. Together they contain 280 mg of caffeine. How much caffeine is in each type of coffee?

+3
Answers (1)
  1. 23 October, 18:13
    0
    If the decaffeinated is x, the regular coffee would be 13*x = 13x

    They both total 280 mg.

    x + 13x = 280

    14x + 280

    x = 280/14

    x = 20 mg

    x, and 13x x = 20, 13x = 13*20 = 260

    Decaffeinated has 20 mg and the regular coffee in Starbucks has 260 mg.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A 12-oz cup of regular coffee at Starbucks has 13 times the amount of caffeine found in the same-sized serving of decaffeinated coffee. ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers