eight years from now,Oana will be twice as old as her brother is now.Oana is now 12 year old. How old is her brother now?
f-2
g-4
h-6
j-10
k-16
12/2=6
or 12+8=20
20/2=10
let her brother's present age be x
12 + 8 = 2x
2x = 20
x = 10
To find out how old Oana's brother is now, you need to solve the equation:
Oana's age 8 years from now = 2 * Brother's current age
Given that Oana is currently 12 years old, we can substitute Oana's age with 12 + 8 (her age 8 years from now):
(12 + 8) = 2 * Brother's current age
20 = 2 * Brother's current age
To isolate Brother's current age, divide both sides of the equation by 2:
Brother's current age = 20 / 2
Brother's current age = 10
Therefore, Oana's brother is currently 10 years old.
The correct answer is j-10.