Subject
Quantitative Aptitude
Topic
Number
If the product of two numbers is 10 and the sum of the two numbers is 7, then the larger of the numbers is
If the product of two numbers is 10 and the sum of the two numbers is 7, then the larger of the numbers is
ক)
-2খ)
2গ)
4ঘ)
5Explanation
Let, larger number = x and small number = y So, xy=10 and, x+y=7--------(i) We know, (x-y)2=(x+y)2 - 4xy =(7)2 - 4×10 =49 - 40 =9 so, x-y=3--------(ii) Now, (i)+(ii) 2x=10 => x=10/2 => x=5 So, larger number = 5 (Ans.)Related questions
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