Question

I am 27 years old and have lived in Australia for 12 years. If I continue to live in Australia, how old will I be when the number of years I have lived here is 75% of my age?
Please give an explanation.

Answer 1

Answer:

60 yrs old

Step-by-step explanation:

let the number of yrs after which the number of yrs u lived in will be 75% of Ur age be X

then ,

the age at that time=27+X

and the number of yrs u lived in=12+X

by given condition,

12+X=75% of (27+X)

12+X= 75/100 ×(27+X)

12+X=3/4×(27+X)

let us multiply both sides by 4

then,48+4X = 3×(27+X)

48+4X=81+3X

4X-3X= 81-48

X = 33

therefore,the age at the time the number of yrs lived in will be 75%of the age=27+X=60 yrs