Monty invested $8600 in a savings account with a yearly interest rate of 5% for 12 years. How much simple interest did he earn?

Respuesta :

SI=P*R*T
  =8600*0.05*12
  =5160

hope this helps!!
5% of 8600 is 430 so he makes $430 every year 
he makes $5,160 in 12 years

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