Question

مو Product of 아 hence is 84 pragating age 2 yrg ago 4 3 yrs find her present age​

Answer 1

Answer:

Product of Pragati's age 2 years ago and 3 years hence is 84. But age cannot be negative so, x = 9. Thus, Pragati's present age is 9 years.

Step-by-step explanation:

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Answer 2

Let the present age of Pragati be x years

2 years ago:

• Pragati age = (x-2) years

After 3 years:

• Pragati age = (x+3) years

According to the Question

Product of ages = 84

• (x-2)(x+3)=84
• x(x+3)-2(x+3)=84
• x²+3x-2x-6-84=0
• x²+x-90=0

Splitting the middle term,we get

• x² +10x-9x-90=0
• x(x+10)-9(x+10)=0
• (x+10)(x-9)=0
• x+10=0 Or x-9 = 0
• x = -10 Or x = 9

[ Age can't be negative ]

Therefore,

• Present age of Pragati = 9 years