Question

The sum of ages of shubbu and tube is 18 years and the difference between their ages is 4 years.

Answer 1

Let age of shubhu is x ans tube is ☓ +4

So according to question,

X +☓ +4=18
2x =18-4=14
☓ =14/2=7

Answer 2

Let age of shubbu be X and tube be Y.

X+Y=18........(1)
X-Y=4...........(2)
adding 1 and 2
2X= 22
X= 11
put X = 11 in 1
11+Y=18
Y=7