问题
解答题
解比例.
|
答案
(1)
:1 4
=1.875:x,2 5
x=1 4
×1.875,2 5
x÷1 4
=0.75÷1 4
,1 4
x=3;
(2)1.2:7.2%=x:
,1 5
7.2%x=1.2×
,1 5
7.2%x÷7.2%=0.24÷7.2%,
x=3
.1 3
解比例.
|
(1)
:1 4
=1.875:x,2 5
x=1 4
×1.875,2 5
x÷1 4
=0.75÷1 4
,1 4
x=3;
(2)1.2:7.2%=x:
,1 5
7.2%x=1.2×
,1 5
7.2%x÷7.2%=0.24÷7.2%,
x=3
.1 3