Correct option is B
Given:
One-third part of a number exceeds its one-fifth part by 6.
Concept Used:
Let the number be x.
The equation formed based on the given condition is:
One-third part of the number = x/3
One-fifth part of the number = x/5
Solution:
According to the given condition,
5x - 3x = 90
2x = 90
x = 45
The number is 45.
One-third part of the number is: 45/3 = 15