Ask Question
8 January, 12:00

Charlie's weight is nine kilograms greater than his brother's. Together they weigh 99 kilograms. Let x represent the weight of the little brother. Which equation can be used to determine what each one weighs?

A) x2 + 9 = 99

B) 2x - 9 = 99

C) 2x + 9 = 99

D) 3x - 9 = 99

+4
Answers (1)
  1. 8 January, 15:53
    0
    C=x+9, c+x=99, c=99-x

    So we have two equations equal to c, c=x+9 and c=99-x, since c=c:

    x+9=99-x

    2x+9=99

    2x=90

    x=45, and since c=x+9, c=54

    So Charlie weighs 54 kg and his brother weighs 45 kg.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Charlie's weight is nine kilograms greater than his brother's. Together they weigh 99 kilograms. Let x represent the weight of the little ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers