Answer
Jonathon will earn $165 in interest after 18 months.
Step-by-step explanation
The simple interest, SI, earned on an amount invested, saved or loaned, P, invested at a rate of R% for a period of time, T, is given as
SI = (PRT/100)
For this question,
P = $2750
R = 4%
T = 18 months = 1.5 years
SI = (2750 × 4 × 1.5)/100
SI = $165
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