If the product of two numbers is equal to thrice its sum and if one of the numbers is 12 find the ot...........

Quantitative Aptitude (RRB NTPC) Number System

If the product of two numbers is equal to thrice its sum, and if one of the numbers is 12, find the other number.

Let the numbers are x & Y
Then xy=(x+y)……………(Given)
The value of one number let it be ‘x’= 12………(Given)
Now equation become
12y= 3(12+y)
y= 4

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