Sum of the reciprocals

Algebra Level 1

The sum of 2 numbers is 10. Their product is 20. What is the sum of the reciprocals of the 2 numbers?


The answer is 0.5.

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2 solutions

Ryan Redz
Jun 6, 2014

x^2 - 10x + 20. solve for x. then get the sum of their reciprocals = 0.5

Harshit Kothari
Mar 31, 2014

1/a+1/b=(a+b)/ab=10/20=0.5

This solution is better than the previous one

Sourabh shukla - 6 years, 10 months ago

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