Answers

2016-02-23T17:31:54+08:00
Let
x =age of mother
y =age of daugter

45=x+5 + y+5 Eq1


5years ago

35 = x + y eq2

X=6y Eq 3. because 5yrs ago the mother is 6 times the age of the daughter
Substitute eq3 to eq2

35 = y +6y
35=7y
y=5

x=6y
x=6x5
x=30

Ages 5years ago
Mother 30
Daughter 5

At present
Mother
30+5=35yrs old

Daughter
5+5=10 yrs old

Checking
35+10=45yrs
45=45





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