1.A mathematicstest consists of 20 multiple-choice questions.
Each question carry 2marks.A boy score 28 marks.
What percentage of questions does he get the answer correct?
2.A hawker bought 1000 apples for $1 each.If he sold the apple at $2 each,
what is the profit percentage?
數學題(英文)!!10分
2007-08-16 7:39 am
回答 (3)
2007-08-16 7:53 am
✔ 最佳答案
1.The number of question the boy got=28/2=14The required percentage=(14/20) x 100%=70%
2.The profit got by the hawker=2 x 1000 - 1000=1000
The required precentage=(1000/1000) x 100%=100%
以上兩題你可以簡化成一條完整的數式以節省時間
我把它們分開是因為容易向你表達
2007-08-16 7:51 am
20(questions) X 2(marks)
full marks=40
28/40=7/10=70%(full marks)
70%(fulll marks) X 20(questions)
=14(questions)
1000(apples) X 1(price for each apple)=$1000----cost
1000(apples) x 2(sold price for each apple)=$2000----total sold price
2000(sold price)-1000(cost)=$1000(profit)
$1000(cost)/$1000(profit)=100%
full marks=40
28/40=7/10=70%(full marks)
70%(fulll marks) X 20(questions)
=14(questions)
1000(apples) X 1(price for each apple)=$1000----cost
1000(apples) x 2(sold price for each apple)=$2000----total sold price
2000(sold price)-1000(cost)=$1000(profit)
$1000(cost)/$1000(profit)=100%
參考: me
2007-08-16 7:46 am
1. Questions he has answered correctly = 28/2 = 14
percentage of questions he get answer correct = 14/20 x 100% = 70%
2. the money earned = 1000x $2 = $2000
profit percentage = ($2000-$1000)/$1000 x 100% = 100%
percentage of questions he get answer correct = 14/20 x 100% = 70%
2. the money earned = 1000x $2 = $2000
profit percentage = ($2000-$1000)/$1000 x 100% = 100%
參考: me
收錄日期: 2021-04-23 17:12:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070815000051KK07016