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The sum of the reciprocals of rehaman's ages 3years ago and 5 years from now is 1/3 find his present age |
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Answer» Answer: 7 yrs Step-by-step EXPLANATION: Let REHMANS age=x three YEARS ago= x-3 after 5years= x+5 A/Q 1/x-3+1/x+5=1/3 = x+5+x-3/x^2+2x-15=1/3 by cross multiplying =3(2x+2)= x^2+2x-15 = 6x+6= x^2+2x-15 = 0=x^2-4x-21 by middle TERM splitting x^2-7x+3x-21 x(x-7)+3(x-7) (x+3)(x-7) x=-3,7 Age can't be in negative hence the answer is 7 Pls mark it as brainliest answer |
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