Bissoy.com
Doctors Medicines MCQs Q&A

The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y?

The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y? Correct Answer 1/2

Hints : xy = 2 ( x + y) xy/ x + y = 2 x + y/xy = 1/2 1/x + 1/y = 1/2

Related Questions

The ratio of the sum of the reciprocals of x and y to the product of the reciprocals of x and y is 1:3. What is sum of the numbers x and y?
The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y ?
The product of two numbers a and b is twice the sum of the numbers. What is the sum of the reciprocals of a and b?
Two stores A and B bought the same product from the company at the same price. Store A marked the price of the product 50% above its cost price and offered two successive discounts of 15% and 10% on the marked price of the product, while store B marked the price of the product 60% above its cost price and offered two successive discounts of 15% and 12% on the marked price of the product. If a customer buys the product from store B, he has to pay Rs. 986 more than that at store A. At what price the two stores bought the product from the company?
The product of two number x and y is twice the sum of the numbers . What is the sum of the reciprocals of x and y?
The LCM of the two numbers is 143 times their HCF. If both the numbers are 3 digit numbers and their HCF is 18, then what is the sum of the reciprocals of those two numbers?
The sum of two numbers is 12 and their product is 35. What is the sum of reciprocals of these numbers?
The sum of the two numbers is 12 and their product is 35.What is the sum of the reciprocals of these numbers?
In a cricket season, India defeated Australia twice. West Indies defeated India twice. Australia defeated West Indies  twice. India defeated New Zealand twice and West Indies defeated New Zealand twice. Which country has lost most number of times?
In movie collections, Rajini defeated Kamal twice. Vijay defeated Rajini twice. Kamal defeated Ajith twice. Rajini defeated Ajith twice and Vijay defeated Ajith twice. Which actor among the following has lost most number of times?