Question

A mother is 20 years older than her daughter
If the daughter is y years old, how old is
the mother?
b In terms of y, how old was the daughter
4 years ago?
c In terms of y, how old was the mother
4 years ago?
d Four years ago, the ratio of their ages
was 7:3. Find the present age of
the daughter.​

Answer 1

Answer:

19 years

Step-by-step explanation:

daughter's age=y years

mother is 20 year older

so mother's age is 20+y

now 4 year ago daughter was y-4 years old

4 years ago mother was (20+y)-4= 16+y years old

ratio =7:3

(16+y)/(y-4)=7/3

3(16+y)=7(y-4)

48+3y= 7y-28

4y=76

y=19

hence present age of daughter is 19 years

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