[問題]PREP-T2-Q153

[oneseven]

Q153
At a certain supplier, a machine of type A costs $20,000 and a machine of type B costs $50,000. Each machine can be purchased by making a 20 percent down payment and repaying the remainder of the cost and the finance charges over a period of time. If the finance charges are equal to 40 percent of the remainder of cost, how much less would 2 machines of typeA cost than 1 machine of type B under this arrangement?

(A) $10,000
(B) $11,200
(C) $12,000
(D) $12,800
(E) $13,200

Answer : E

[hey]

Machine A:20000*2=40000
down payment:40000*20%=8000
remainder:40000-8000=32000
finance charge:32000*40%=12800
total:40000+12800=52800
Machine B:50000
down payment:50000*20%=10000
remainder:50000-10000=40000
finance charge:40000*40%=16000
total:50000+16000=66000

difference between two arrangement:66000-52800=13200