In the ratio of 3: 4 = 0.6: 0.8, if the last term of the first ratio is added with 5 to make the equation unchanged, how much should the last term of the second ratio be added?
3:(4+5)=0.6:0.8
9*0.6=X*3
5.4 = 3 times
X=5.4 divided by 3
X= 1.8
1.8-0.8= 1
A: add one to the second item.