SOLUTION: Not wanting to be embarrassed by revealing her age on her birthday, Grandma instead told the grandkids that if they multiplied her age in 5 years by 5, then multiplied her age in 6
Algebra.Com
Question 280026: Not wanting to be embarrassed by revealing her age on her birthday, Grandma instead told the grandkids that if they multiplied her age in 5 years by 5, then multiplied her age in 6 years by 6, and added the two totals together, they would get a number that is 12 times her current age. When she saw the large wax forest fire atop her birthday cake , Grandma knew they had figured it out. How old is she?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Not wanting to be embarrassed by revealing her age on her birthday, Grandma instead told the grandkids that if they multiplied her age in 5 years by 5, then multiplied her age in 6 years by 6, and added the two totals together, they would get a number that is 12 times her current age. When she saw the large wax forest fire atop her birthday cake , Grandma knew they had figured it out. How old is she?
let her age be x now
after 5 years
(x+5)*5
after 6 years
(x+6)*6
5(x+5) +6(x+6) = 12x
5x+25+6x+36=12x
11x+61=12x
12x-11x=61
x=61
RELATED QUESTIONS
The age of grandmas two grandkids are the same as the two digit of her age. The three of... (answered by ankor@dixie-net.com)
Sarah asked her Grandma to tell her how old she was. She replied "If you multiply my age... (answered by ankor@dixie-net.com)
Jenny and her cousin Jason share the same birthday. Jenny realized that on their next... (answered by TimothyLamb)
jan would like to hang 19 of her favorite photo's on a wall in her room, but she has room (answered by stanbon)
37. A clinical nurse, on being asked her age, replied that the difference between... (answered by JulietG)
Marla's Grandma is currently 3 times older than Marla, but 25 years
from now Marla... (answered by ewatrrr,Alan3354)
On Melissas's 6th birthday, she gets a $3000 CD that earns 4% interest, compounded... (answered by solver91311)
At Julie’s next birthday if she adds 20 to her age she will be three times her current... (answered by Alan3354)
The product of Mary's age in years on her last birthday and her age now in complete... (answered by ankor@dixie-net.com)