Question

Please help me In a geometric series, each term is 21% less than the previous term. What is the value of r for this

geometric series?
0.79
0.21
1
1.21
1.21

Answer 1

A

Explanation:

You need a value that keeps 79% of the previous value. 79% is 0.79 as a decimal.

You get that by taking 100% of the value and subtracting 21% of the value. Said easier (100% x - 21%x = 79% of x.

r = 0.79