Answer:
the last one I think, sorry if it is roung.
198 = 5X:X = A:B
198 = 5X + X = 6X
X = 198 / 6 = 33
A = 33*5 = 165mph
B = 33*1 = 33mph
If quarterly shrinkage (every 3 months) is 2.5%, then multiplying by $875,495 gives a value of 21887.38, or an average monthly shrinkage of 21887.38 / 3 = $7,295.79.For an employee to monitor the CCTV, it would cost ($7.5/h)(11 h/d)(30 d/m) = $2,475/month. Therefore, it is much cheaper (around 2/3 cheaper) to have an employee monitor CCTV rather than to allow the high shrinkage rate.
