Question

The product of Rumi's age 5 years ago with his age 7 years later is 28. Rumi's
present age is​

Answer 1

Answer:

Ramu's present age is 6year

Step-by-step explanation:

Let Ramu's present age be xyears.

According to the question,

⇒ (x−5)(x+9)=15

=X2 +9x−5x−45−15=0

= x2+4x−60=0

=x2 +10x−6x−60=0

⇒ x(x+10)−6(x+10)=0

⇒ (x+10)(x−6)=0

⇒ x+10=0 and x−6=0

⇒ x=−10 and x=6

⇒ Age cannot be negative.

∴ Ramu's present age is 6 years.