After 15 years ,Ariel's age will become four times that of her present age . Find her present age.
a+15 = 4a
a=5
check: in 15 years she will be 20=4*5
To find Ariel's present age, we can set up an equation using the information given in the problem.
Let's assume Ariel's present age is x years.
We are given that after 15 years, Ariel's age will become four times her present age. So, her age after 15 years will be 4 times x, which is 4x.
According to the problem, after 15 years, Ariel's age will be 4 times her present age:
x + 15 = 4x
To solve this equation, we need to isolate the variable.
First, subtract x from both sides of the equation:
15 = 3x
Next, divide both sides of the equation by 3:
15/3 = x
5 = x
Therefore, Ariel's present age is 5 years.