# Math Help - Percentage Problem!

1. ## Percentage Problem!

Q: The length of a rod is 0.45m. It expands to a length of 0.47m.

Find the expansion as a percentage of its original length.

2. $\frac{\text{initial length}}{\text{final length}}=\frac{0.45}{0.47} = 95.745 \%$

3. It seems too simple, thanks though!

4. I think percentage increase in length

=[change in length/orig. length] X100

so, it should be=[0.02/0.45] X 100

am I correct??

5. Ans- 4.44%

6. Thank you so much sumit2009, you've just confirmed the answer for me.

I thought it was 4.44%

nice one!