Answer
estimated cost = 20500
actual cost = 19920
Work Step by Step
The number of months in 4 years is given by:
12 x 4 =48
Cost of lease per month = 415
Therefore, the estimated cost of the lease for 4 years is:
= 410 x 50
= 20500
Actual cost of the lease = 415 x 48 = 19920