Mathematics
paulishca
27

Pamela's age is two times Jiri's age. The sum of their ages is 87 . What is Jiri's age?

+2
(1) Answers
bickbewford

Let P be Pamela's age Let J be Jiri's age P = 2J (Pamela is twice Jiri's age) (1) P + J = 87 (combination of their ages is 87) P = 87 - J (thus Pamela's age would be 87 minus Jiri's age) (2) Plug (2) into (1) (replacing P with its value) Rearrange equation to find J (Jiri's age) 87 - J = 2J 87 = 2J + J 87 = 3J 87/3 = 3J/3 29 = J J = 29  Note that you can do several more steps to check the answer and/or find Pamela's age.

Add answer