The average age of my parents 20 years ago was 23 years. The average age of my parents and me now is 34 years. What is my present age?
Answers
Answer:
My present age is 25 years old
Step-by-step explanation:
Parents age 20 years ago = 23
My age now = x
Average age of parents + me now
= [(23 + 20) + x] ÷ 2 = 34
= [43 + x] ÷ 2 = 34
= [43 + x] = [34 × 2]
= 43 + x = 68
x = 68 - 43
x = 25
My present age is 25 years old
(pls mark me as brainliest)
Answer:
16 years
Step-by-step explanation:
Let the present age of parents be x,y and
present age of child be z
20 years ago the age of parenst is x−20,y−20
Given that, 20 years ago the average age of the parents is 23.
⟹ x−20+y−20 =23⟹x+y−40=46
2
⟹x+y=46+40=86 ———-(1)
Given, that average age of the family at present is 34.
⟹ x+y+z =34⟹x+y+z=34×3=102 ———(2)
3
Substituting (1) in (2) we get
86+z=102⟹z=102−86=16
Therefore the present age is 16 years