you borrow $200,000 for 18 years at 6% apr with monthly payments. what is the total interest paid over the life of the loan? you borrow $200,000 for 18 years at 6% apr with monthly payments. what is the total interest paid over the life of the loan? $103,787.80 $111,592.14 $119,505.16 $127,525.12 $135,653.85