A....除..... 5....=B
B....加......9....=A
利用上面二個算題，算出A和B的答案。
數學I.Q.題
2007-08-03 1:34 am
回答 (7)
2007-08-03 1:57 am
✔ 最佳答案
A/5 = B and B+9 = A方法一:
step 1] (B+9)/5 = B
step 2] B+9 =B x 5
step 3] 9 = B x 5 - B
step 4] 9 = B(1 x 5 - 1)
step 5] 9 = 4B
step 6] B = 2.25
step 7] 2.25 + 9 = A
step 8] A = 11.25
方法二:
step 1] (A/5) + 9 = A
step 2] A/5 = A-9
step 3] 9 = A-(A/5)
step 4] 9= A( 1 - 1/5)
step 5] 9 = 0.8A
step 6] A = 11.25
step 7] B+9 = 11.25
step 8] B = 11.25 - 9
step 9] B = 2.25
2007-08-03 09:42:50 補充：
下面sophiediao, 仲乜抄我? But, 好野先會俾人抄, so again, thanks for copying my answer.
參考: simple calculations
2007-08-05 1:39 am
A和B的答案:
A = 11.25
B = 2.25
A = 11.25
B = 2.25
2007-08-03 10:58 pm
應該是A=11.25, B=2.25
2007-08-03 2:00 am
A/5 = B and B+9 = A
方法一:
step 1] (B+9)/5 = B
step 2] B+9 =B x 5
step 3] 9 = B x 5 - B
step 4] 9 = B(1 x 5 - 1)
step 5] 9 = 4B
step 6] B = 2.25
step 7] 2.25 + 9 = A
step 8] A = 11.25
方法二:
step 1] (A/5) + 9 = A
step 2] A/5 = A-9
step 3] 9 = A-(A/5)
step 4] 9= A( 1 - 1/5)
step 5] 9 = 0.8A
step 6] A = 11.25
step 7] B+9 = 11.25
step 8] B = 11.25 - 9
step 9] B = 2.25
方法一:
step 1] (B+9)/5 = B
step 2] B+9 =B x 5
step 3] 9 = B x 5 - B
step 4] 9 = B(1 x 5 - 1)
step 5] 9 = 4B
step 6] B = 2.25
step 7] 2.25 + 9 = A
step 8] A = 11.25
方法二:
step 1] (A/5) + 9 = A
step 2] A/5 = A-9
step 3] 9 = A-(A/5)
step 4] 9= A( 1 - 1/5)
step 5] 9 = 0.8A
step 6] A = 11.25
step 7] B+9 = 11.25
step 8] B = 11.25 - 9
step 9] B = 2.25
2007-08-03 1:56 am
A = 11.25
B = 2.25
STEP:
B + 9 / 5 = B
B + 9 = 5B
4B = 9
B = 2.25
B + 9 = A
2.25 + 9 = 11.25
B = 2.25
STEP:
B + 9 / 5 = B
B + 9 = 5B
4B = 9
B = 2.25
B + 9 = A
2.25 + 9 = 11.25
參考: 我
2007-08-03 1:49 am
A/5=B & B+9=A
即係(B+9)/5=B
B+9=5B
9=5B-B
9=4B
B=9/4=2.25
因為A=B+9, 即係A=11.25
A=11.25, B=2.25
即係(B+9)/5=B
B+9=5B
9=5B-B
9=4B
B=9/4=2.25
因為A=B+9, 即係A=11.25
A=11.25, B=2.25
參考: ME
2007-08-03 1:49 am
A = 11.25
B = 2.25
B = 2.25
收錄日期: 2021-04-12 20:47:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070802000051KK03862