Answer:
$1,152
Step-by-step explanation:
Data provided in the question
Minimum amount for water cost per month = $30
Time period for full warranty = 5 years
Interest rate = 6% per year
Based on the above information, the minimum amount for spending now in compounded monthly is
= Minimum amount for water cost per month × (P/A ; interest rate and time period)
= $30 × (P/A ; 0.5% and 60 months)
= $1,152
Refer to the P/A table
In compounded monthly we divided the rate by 12 months and multiplied the time period by 12 months