One third of a number added to four fifth of itself is equal to seventeen. Find the number

(x/3)+ (4/5)x = 17 multiply both sides by 15

5 x + 12 x = 255
17 x = 255
x = 15

2X-1

Good

it is true

yes

One-third of number added to four

1/3+4/5 _17=15//

Sorry, I'm not sure what you mean. Could you please provide more context or information?

A man is four times as old his son in four years time he will be three times as old. What are their ages now

Let's assume the current age of son is x years old.

According to the problem statement, the father is four times as old as his son. Therefore, father's age will be 4x years old.

In four years, the son's age will be (x+4) and the father's age will be (4x+4).

Also, according to the problem statement, in four years time (i.e., after adding 4 to their current ages), the father's age will be three times as old as his son. This can be written as:

4x + 4 = 3(x + 4)

Solving for x, we get:

4x + 4 = 3x + 12
x = 8

So, the current age of son is 8 years old.

Therefore, the current age of father is 4x = 4(8) = 32 years old.