Question

The sum of two numbers is 168.24. One

number is thrice the other, find the numbers​

Answer 1

Let the first number be x.

Let the second number be y.

According to question

x+y=16(1)

x=3y(2)

So, x−3y=0(2) Multiply equation (1) by 3.

Solve both equations:

3x+3y=48(1)

x−3y=0(2)

4x=48(1) + (2)

x=12(3)

Putting in equation (1):

x+y=16(1)

12+y=16(1),(3)

y=16−12(4)

y=4(5)