Question

the difference between two whole number is 66 the ratio of the two numbers is 2:5 what are the two numbers

Answer 1

You take the two numbers on the basis of ratio 2:5,ie 2x & 5x respectively.
Now it is given that difference between the two numbers is 66.
Therefore
5x-2x =66
3x=66
x=22
Two numbers are 2*22 & 5*22.
Which are 44 and 110 respectively

Answer 2

difference between the number is 66
ratio of two numbers is 2:5
so,5x-2x=66
3x=66
x=33
so, two numbers are 66 and 165