SOLUTION: john is twice the age of bill . sum is greater than 21 . find youngest possible age of both

Algebra.Com
Question 693144: john is twice the age of bill . sum is greater than 21 . find youngest possible age of both
Answer by ankor@dixie-net.com(22740)   (Show Source): You can put this solution on YOUR website!
john is twice the age of bill. sum is greater than 21 .
find youngest possible age of both
:
j = 2b
:
j + b > 21
Replace j with 2b
2b + b > 21
3b > 21
b > 21/3
b > 7
:
Bill's age at least 8, then John's age at least 2(8) = 16

RELATED QUESTIONS

The sum of dans age and his sister age is greater than 45 dans age is three years more... (answered by harpazo)
bill is twice johns age and sue is 2 years older than john the sum of their ages is... (answered by josgarithmetic,MathTherapy)
Yolanda is four years younger than three times her daughters age. The sum of their ages... (answered by addingup)
Matt is four years younger than twice his cousin Andy’s age. The sum of their ages is... (answered by ankor@dixie-net.com)
Sarah is 1 year less than half her mom’s age. The sum of their ages is at least 83.... (answered by Alan3354)
John's age is seventeen years less than twice Isabella's age. Together, the sum of their... (answered by ewatrrr)
john age is 2 years more than twice Mai's age and the sum of their age is 32 years. How... (answered by ikleyn)
Ray is 3 more than twice the age of his sister, Becky. Combined their ages sum to 27.... (answered by LinnW)
celine is twice as old as her daughter.if the sum of their ages is greater than 60 .what... (answered by josgarithmetic)