Problema Solution
Tamara has two sisters . one of the sisters is 7 years older than tamara . the other sister is 3 years
Younger than tamara . the product of Tamara's sisters age is 24. How old is tamara ?
Answer provided by our tutors
Let 'x' represent the age of Tamara, x>=0.
One sister is 7 years older means she is 'x + 7' years old.
Other sister is 3 years younger means she is 'x - 3' years old.
We are given the product of 'x + 7' and 'x - 3':
(x + 7)(x - 3) = 24
........
click here to see the quadratic equation solved for x
........
x = 5
We need to ignore the negative solution -9 since the age can not be negative number.
Tamara is 5 years old.