Question

[Trần Lâm Thiên Hương]

my mother is 24 years old and 6 time as old I was many years ago. now she is three times as old as I am. how old is she now

Answer 1

[Bùi Thảo Nguyên]

When my mother was 24 years old, I was: 24:6=4 (years old)

==> The difference between my mother's age and my age that time was: 24 - 4 = 20 (years old)

Because the difference between my mother's age and my age never changes, so now, she is 20 years older than me.

We have a diagram: Bạn vẽ sơ đồ tuổi con hiện nay (My age now) với 1 phần, tuổi mẹ hiện nay (My mother's age now) với 3 phần bằng nhau như thế. (tự vẽ nha)

==> My mother's age now is: [20: (3-1)] * 3 = 30 (years old)

               Answer: 30 years old