請教問題

[poh0702]

A number is multipled by 4 then that product is divided by100. This same result could be obtained by dividing the original number by?
(A)0.04
(B)0.25
(C)0.4
(D)2.5
(E)25

[portia]

設A number為X
則

X * 4 / 100 = X / 25

答案E