Question

The product of Anjali’s age five years ago with her age 8 years later is 30 in years. Find her present age.

Answer 1

GIVEN :–

• The product of Anjali’s age five years ago with her age 8 years later is 30 in years.

TO FIND :–

• Present age of Anjali = ?

SOLUTION :–

• Let the age of Anjali = x

• According to the question –

=> (x - 5)(x + 8) = 30

=> x² - 5x + 8x - 40 = 30

=> x² + 3x - 40 = 30

=> x² + 3x -70 = 0

• Splitting Middle term –

=> x² + 10x - 7x - 70 = 0

=> x(x + 10) - 7(x + 10) = 0

=> (x - 7)(x + 10) = 0

=> x = 7 , x = - 10

• Hence , The present age of Anjali is 7 year .

Answer 2

Answer:

Her present age is 7

Step-by-step explanation:

Age can not be negative.

After factorisation select the Right one.