The present age of father is 45 years and her
daughter is 20 years. Find the ratio of
(a) present age of father to present age of daughter.
(b) age of father to the age of daughter when daughter was 15 year old.
(c) age of daughter to father when father was
30 years old.
please fast
Answers
Step-by-step explanation:
(a) If the daughter is 20 years old today, then she was 15 years old (20-15=5) years ago. so, five years ago the daughter was 15 years old while the father was (45-5=40) years old
(b) The ratio of the father’s age and his daughter's age is 3:1
Let the rationale between their ages be x. Thus the fathers age is 3x and daughter's age is x
After 12 years, the ratio of their ages would be 11:5.
After 12 years their ages will ve father's age 3x + 12 and daughter's age x + 12. The ratio between their ages then
3x + 12 / x + 12 = 11 / 5
Cross multiplication
5 (3x + 12) = 11 (x + 12)
15x + 60 = 11x + 132
15x - 11x = 132 - 60
4x = 72
x = 72 / 4
x = 18
The rationale is 18, hence their present ages
Father's present age 3x = 3 × 18 = 54 years
Daughter's present age x = 1 × 18 = 18 years
Answer the present age of the father is 54 years.
Hope it will help you. Thank you.
Answer:
(a) =9:4
(b) =8:3
(c) =1:6