Question 450486
when tony has his birthday tomorrow, his age in months will be the same as his grandfathers in years.
 How old will tony be if their combined ages will be 78
:
Let t = Tony's age in yrs
Let g = granddad's age
:
" his age in months will be the same as his grandfathers in years."
g = 12t
:
"combined ages will be 78"
g + t = 78
replace g with 12t
12t + t = 78
13t = 78
t = {{{78/13}}}
t = 6 yr is T's age
then obviously, 72 is G's age