Question

Can someone have a friendly hand and help me on number 10 please

Answer 1

To solve this question and ones like it, we can do simple subtraction. We need to subtract the 1990 swim from the 1985 swim, we will see how much longer the 1985 swim was.

 22.40
-21.81
00.59

Using the math above, we can see that the 1985 swim was 0.59 seconds longer than the 1990 swim.