Question

The first number is equal to 4 times the second number, the difference of the number is 12, what are the two numbers?

Answer 1

let 1st and 2nd no be x and y respectively

1st case:x=4y

2nd case:x-y=12

substituting the value of x in 2nd case

4y-y=12

3y=12

y=12÷3

y=4

now putting the value of y in 1st case

x=4×4

=16