Question

The sum of three numbers is 123
The second number is 4 times the first.
The third number is 12 less than the second.
What is the second number?

Answer 1

Answer:

60

Step-by-step explanation:

Let x,y,z be three numbers.

i) Second number is 4 times the first

y=4x =>x=y/4

ii) Third number is 12 less than the second

z=y-12

Sum of three numbers is 123

x+y+z=123

y/4+y+y-12=123

y/4+2y=135

y+8y=540

9y=540

y=60

Second number is 60.