+448 When the same constant is added to the numbers a, b, and c, a three-term geometric sequence arises. If a=60, b=100, and c=140, what is the common ratio of the resulting sequence?
+17 You can put it like this.
The ratio of 60 + x : 100 + x is equal to 100 + x : 140 + x,
where x is the constant added to a, b and c.
Hopefully you can find the answer after this.
