We need to find how much money the company would pay if they choose pay off its loan in 20 months at 11%
(11*30.000)/100 = 3300 of interest
Each month the company would have to pay (30000)/ (20) + 3300 = 4800,
(1500 + 3300) * 20 = 96000 money that the company would pay in 20 months at 11%
Then we need to find how much money the company would pay if they choose pay off its loan in 32 months at 10%
(10* 30.000)/100 = 3000 of interest
(30000 / 32 ) = 937.5 + 3000
(937.5 + 3000) * 32 = 126000 money that the company would pay in 32 months at 10%
To know how much money the company will save we make the next subtract = money that the company would pay in 20 months at 11% - money that the company would pay in 32 months at 10%
96000 - 126000 = -30000
we use 30000 in positive sing: 30000 total of money that the company will save using the loan in 20 months at 11%