Ask Question
13 April, 19:34

I have 3 children. Their ages add up to 21, and when multiplied they equal 75. How old are they?

+3
Answers (2)
  1. 13 April, 19:42
    0
    So represent the ages as x y and z with each being numbers

    x+y+z=21

    x times y times z=75

    this is really tough for elementary school

    one way is to find the factors of 75 or the numbers that add up to 75 and trial and error

    use whole numbers becuase this is the world of math so

    75=1 times 3 times 5 times 5

    possible ages are

    3,5,5

    1,5,15

    1,3,25

    add them up

    3+5+5=13

    1+5+15=21 check

    1+3+25=29

    their ages are 1, 5 and 15
  2. 13 April, 19:56
    0
    The answer is 1,5,15. 1 + 5 + 15 equals 21. 1*15*5 = 75 so your answer would be 1,5,15
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “I have 3 children. Their ages add up to 21, and when multiplied they equal 75. How old are they? ...” 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