<1>Mr Brown bought a car for$115000. He then used $10000 to upgrade the car and sold it to Miss White at $120000. Find Mr Brown's profit % or loss %.
<2>Mary paid $66 for a photo album which was marked at $75. Find the discount %.
<3>A man bought a chair at a discount of 35% of the marked price. If he paid $182, find the discount.
急!急!急! 超難數學題(7)
2006-12-02 7:20 pm
回答 (2)
2006-12-02 7:33 pm
✔ 最佳答案
(1) Price of car = $115000Updated price of car including upgrade = $115000 + $10000 = $125000
Sold to Miss White = $120000
Loss in the sale = $125000 - $120000 = $5000
Loss % = 5000/125000 x 100 = 4%
(2) Discount % is 75 x A% = 75 - 66
75 x A% = 9
A% = 9/75
A = 9/75 x 100
A = 12%
(3) Original price is 182 / 65% = 280
Discount = $280 - $182 = $98
2006-12-02 9:47 pm
(1).
Original price of a car when purchase = $115,000
Price of a car after upgrade = $115,000 + $10,000
= $125,000
Selling price of a car (to Miss White) = $120,000
Loss = $120,000 - $125,000
= $5,000
Percentage (%) loss = (5,000 / 125,000) * 100%
= 4% (loss)
(2).
Discount = $75 - $66
= $9
Discount percentage = (9/75) * 100%
= 12%
(3).
Original price of a chair = $182 / (1-35%)
= $280
Discount = $280 - $182
= $98
Original price of a car when purchase = $115,000
Price of a car after upgrade = $115,000 + $10,000
= $125,000
Selling price of a car (to Miss White) = $120,000
Loss = $120,000 - $125,000
= $5,000
Percentage (%) loss = (5,000 / 125,000) * 100%
= 4% (loss)
(2).
Discount = $75 - $66
= $9
Discount percentage = (9/75) * 100%
= 12%
(3).
Original price of a chair = $182 / (1-35%)
= $280
Discount = $280 - $182
= $98
參考: Me
收錄日期: 2021-04-12 22:15:26
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