# If 1+5=18, 2+10=36, 3+15=54, 4+20=?

Answered

Best answer

(a+b)*3 ie 1+5=6*3=18 so 4+20=24*3=72 so answer is 72

[quads id=”1″]

**If 1+5=18,**

**2+10=36,**

**3+15=54,**

**Then**

**4+20=?**

You could have two ways to solve this problem, but this is the best one!

- 1+5= 6*3=18 , 2+10= 12*3=36, 3+15=18*3=54, 4+20=24*3=72