Question

Teresa's mother is twice as old she is. Twenty years ago her mother was 3 times as old she was. Find their present ages.

Answer 1

Answer:

Present age of Teresa is 20 years and her mother's age is 40 years.

Step-by-step explanation:

Let Teresa'a age be, x years.

Then her mother's age is 2x years.

20 years age the relation between Teresa's age and her mother's age was:

$x-20=3(x-20)$

Solve this equation for x as follows:

$x-20=3(x-20)\\x-20=3x-60\\3x-x=60-20\\2x=40\\x=20$

Teresa's present age is 20 years.

Teresa's mother's age is, 2 × 20 = 40 years.

Answer 2

Answer:

Step-by-step explanation: