Rod I need help with this please!

Question

Weston used the steps below to determine the percent equivalent to .

Step 1:  

Step 2:

Step 3:  

Step 4:   = 25%

What was Weston’s error?

In Step 2, the second fraction should have been out of a multiple of 40.

In Step 2, the multiplication relationship shown should have been division.

In Step 4, the decimal should not have been moved.

In Step 4, the decimal should have been moved two places instead of one.

Answer 1

In Step 4 the number 2.5 is already a per cent because it is being divided by 100, so there's no need to do any more moving of the decimal point: 2.5/100 means 2.5%. Therefore the decimal point should not have been moved at all.