Phillippe invested $1,000 ten years ago and expected to have $1,800 today. He has not added or withdrawn any money from this account since his initial investment. All interest was reinvested in the account. As it turns out, he only has $1,680 in his account today. Which one of the following must be true?a) He earned simple interest rather than compound interest.b) He did not earn any interest on interest as he expected.c) He ignored the Rule of 72 which caused his account to decrease in value.d) He earned a lower interest rate than he expected.e) The future value interest factor turned out to be higher than he expected.

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andromache andromache · Answer 1 · 2020-08-12T05:20:25+02:00

Answer:

d) He earned a lower interest rate than he expected

Explanation:

Data provided in the question

Invested amount ten years ago = $1,000

Expected amount = $1,800

Today amount = $1,680

Based on the above information,

Since the bond is based on the floating rate not the fixed rate that results in the value of the investment to $1,800

And, the today amount is $1,680 i.e. less than the expected amount so the internet rate should be less as compared with the expected rate

hence, correct option is d.