Question 682114: A,s mother is twice as old as A,s brother.A is 6 years younger than his brother but 4 years older than this sister.if A,s sister is 15 his mother,s age is:
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! A,s mother is twice as old as A,s brother.
A is 6 years younger than his brother but 4 years older than this sister.
if A,s sister is 15 his mother,s age is:
;
Write an equation for each statement
:
"A,s mother is twice as old as A,s brother."
m = 2b
:
"A is 6 years younger than his brother"
A = b-6
:
"but 4 years older than this sister."
A = s+4
:
"if A,s sister is 15 his mother,s age is:
s = 15
then
A = 15 + 4
A = 19
and we know
A = b - 6
19 = b - 6
19 + 6 = b
b = 25
and we know
m = 2b
m = 2(25)
m = 50 yrs is Mom's age
|
|
|
