The LCM of 4,10 and 12 is 60.
The total amount repaid will be
.. monthly payment × number of months
.. = $2,160 × 360
.. = $777,600
Subtracting the amount of the principal that was repaid gives the interest.
.. $777,600 -360,000 = $417,600 . . . . total interest paid
1st change 1 5/6 into a mixed number:
1 5/6 = 11/6
New problem:
8/10 divided by 11/6
to divide fractions you turn the 1st fraction upside down and then change the division sign to a multiplication sign:
8/10 / 11/6
10/8 * 11/6
=55/24 or 1 7/24
