Question

[Nguyễn Huyền Gia Hân]

Tom is 9 years old and his mother is 35 years old .In how many year's time will his mother's age be three times Tom's age ?

                                                 SOS!  

Answer 1

[ahihi]

in 4 years

Answer 2

[Nguyễn Đức Kiên]

We have the difference between Tom's and his mom's age never changes and equals 35 - 9=26 years

=> Tom's age when that happens will be \(26:\left(3-1\right)=13\)

=> In 13 - 9 = 4 years will his mother's age be 3 times Tom's age