Problema Solution
my brother is 4 time as as old as i am six yrs from now, he be twice as old as i am, how old is my brother now?
Answer provided by our tutors
let
m = my age now
b = my brother's age now
my brother is 4 times as old as i am
b = 4m
6 yrs from now, he'll be twice as old as i am:
b + 6 = 2(m + 6)
by solving the system of equations:
b = 4m
b + 6 = 2(m + 6)
we find:
b = 12 years
m = 3 years
click here to see the step by step solution of the system of equations:
my brother is 12 years old now.