Wetbonescore, this is the solution:
Step 1: Let's calculate the diffrence of the investment in 1985 and 1980, as follows:
• Difference = 36,700 - 30,200
,
• Difference = 6,500
Step 2: Now, let's calculate the rate of change between 1985 and 1980, this way:
• Rate = 6,500/30,200 * 100
,
• Rate = 0.215 * 100
,
• Rate = 21.5%
,
• Rate = 22% (rounding to the next whole)
The value of this investment is increasing at a rate of 22%