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2015-01-21 1:40 am
a shopkeeper bought 250CDs at the rate of $25 each and sold 160 of them in packets og 4at the rate of $120 per packet. at what price should he sell each of the remaining CDs to make an overrall profit of 20%?
回答 (2)
2015-01-21 1:16 pm
✔ 最佳答案
Let$y be the price that he sell each of the remaining CDs.Overall cost = $25 × 250
Overall selling price = $[(120/4) × (160) + y(250 - 160)]
Overall profit = $25 × 250 × 20%
(120/4) × (160) + y(250 - 160) = 25 × 250 + 25 × 250 × 20%
4800 + 90y = 7500
90y = 2700
y = 30
Price of each remaining CD = $30
2015-01-21 2:08 am
The answer is $30.
2015-01-20 18:11:08 補充：
Outline of Solution:
Total cost = $25 × 250 = $6250
For 160 CDs, price = $120 per packet of 4 = $30 per CD
For the remaining 250 - 160 = 90 CDs, let the price be $y.
Then,
[ (160 × 30 + 90 × y) - 6250 ] / 6250 = 20%
4800 + 90y = 7250
y = 30
2015-01-20 18:11:08 補充：
Outline of Solution:
Total cost = $25 × 250 = $6250
For 160 CDs, price = $120 per packet of 4 = $30 per CD
For the remaining 250 - 160 = 90 CDs, let the price be $y.
Then,
[ (160 × 30 + 90 × y) - 6250 ] / 6250 = 20%
4800 + 90y = 7250
y = 30
收錄日期: 2021-04-15 18:11:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150120000051KK00043