Question

HELLO FRIEND ☺☺☺❤
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HERE IS ANOTHER QUESTION?

Product Of Pragati's age 2 years ago and 3 years hence is 84. Find her present age ??

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Answer 1

Howdy!!!

Here's the required answer.....

its super Easy.....

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Let the present age be x

age before 2 years = x-2

Age after 3 years hence = x +3.

Their product = (x-2)( x +3)

A/Q

(x-2)( x +3)= 84

$(x-2)( x +3) = 84 \\ {x}^{2} + 3x - 2x - 6 = 84 \\ {x}^{2} + x - 90 = 0 \\ {x}^{2} \ + 10x - 9x = 0 \\ x(x + 10) - 9(x + 10) = 0 \\ \\ x - 9 = 0 \\ x = 9 \: \\ or \\ x + 10 = 0 \\ x = - 10$
since the value of age can't be negative so the age is 9 years