Question

After 30 years,Kassim's age will be three times his age this year.How old is Kassim this year? ​

Answer 1

Age Problem

Answer:

Kassim is
`15` years old this year.

Explanation:

Let
`k` be Kassim's age this year.

Kassim's age after
`30` years is
`k +30`. Also,
`3` times the age of Kassim is
`3k`. We are told that after
`30` years, Kassim's age will be
`3` times as his age. So,
`k +30 = 3k`.

Solving for
`k`:

`k +30 = 3k \\ k +30 -3k = 3k -3k \\ -2k +30 = 0 \\ -2k +30 -30 = -30 \\ -2k = -30 \\ (-2k)/(-2) = (-30)/(-2) \\ k = 15`