中三數學一條 [5分]
回答 (5)
2007-10-22 9:20 am
✔ 最佳答案
{B = A * (1+ 0.05) ... ... ( i ) ll( 5%= 0.05)
C = B * (1 + 0.2 ) ... ... ( i i ) ll( 20% = 0.2)
Put ( i ) into ( i i ),
we have
C = A * (1+ 0.05) * (1 + 0.2 )
= A * (1.05 )( 1.2 )
= A * (1.26 )
= A * (1 + 26% )
Therefore, C is 26% higer than A .
*Hope it helps~
參考: ME
2007-10-22 8:56 am
B = A * 1.05
C = B * 1.2
C = A * 1.05 * 1.2
C = A * 1.26
C比A高26%
C = B * 1.2
C = A * 1.05 * 1.2
C = A * 1.26
C比A高26%
2007-10-22 8:12 am
0.05乘0.2乘100%
=10%
=10%
2007-10-22 8:11 am
b=a*1.05
c=b*1.2
所以 c=a*1.05*1.2=a*1.26
即係C比A高26%
c=b*1.2
所以 c=a*1.05*1.2=a*1.26
即係C比A高26%
2007-10-22 8:09 am
Let height of A is X
height of B = 1.05X
height of C = 1.2 (1.05X) = 1.26 X
Height of C : Height of A = 1.26X : X
C is taller than A of 26%
height of B = 1.05X
height of C = 1.2 (1.05X) = 1.26 X
Height of C : Height of A = 1.26X : X
C is taller than A of 26%
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