"True" "False"
1.) A number has decreased from 150 to 12. The percentage decrease is25%
2.) The number 2000 has increased by20%. THe new value is 2400.
3.) Th enumber 375 has decreased by 40%. The new value is 150.
4.) Having increased by 15%, a number becomes 736. The number is 625.6
5.) A number has increased from 72 to 81. The perecentage increase is 12.5%
6.) Having decreased by 16%, a number becomes 210. The number is 250.
Maths功課...救命
2006-11-29 2:24 am
回答 (4)
2006-11-29 3:04 am
✔ 最佳答案
1. false: (150-12) /150 * 100% = 92%2. true 2000* (1+0.2) = 2400
3. false 375 * (1-0.4) = 225
4. false X * (1 + 0.15) = 736 ; X = 640
5. true (81 - 72 ) / 72 * 10% = 12.5%
6. true X * (1-0.16) = 210; X = 250
2006-11-29 2:34 am
1. False
2.True
3.False
4.False
5.True
6.True
2.True
3.False
4.False
5.True
6.True
2006-11-29 2:34 am
1) False
2) True
3) False
4) False
5) True
6) True
2) True
3) False
4) False
5) True
6) True
2006-11-29 2:31 am
F
T
F
F
T
T
T
F
F
T
T
收錄日期: 2021-04-13 15:51:51
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https://hk.answers.yahoo.com/question/index?qid=20061128000051KK02807