The difference between two numbers is 7 and their product is 60. One of the two numbers must be ---
A
4
B
5
C
6
D
8
Correct Answer: 5
Let, the smaller no be x so, the greater no is x + 7 According to question , x( x + 7) = 60 x2 + 7x - 60 = 0 x = 5, - 12