SOLUTION: what is 25 cm to 36 cm when youre doing percent of change and could you explain evey step so its easier to understand thanks

Question 189511This question is from textbook Pre-Algrbra
: what is 25 cm to 36 cm when youre doing percent of change and could you explain evey step so its easier to understand thanks This question is from textbook Pre-Algrbra

Found 2 solutions by feliz1965, solver91311:
Answer by feliz1965(151) (Show Source): You can put this solution on YOUR website!
25 cm to 36 cm means 25 cm divided by 36 cm.
So, we write it like this 25/36.
Then 25/36 = 0.694, which we can round off to the nearest tenths to be 0.7
I hope this helps.

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Let r be the decimal fraction increase from 25 to 36. What this means is that you are going to take some percentage of 25, add that to 25 and have a result of 36, like this:

Add -25 to both sides of the equation:

Multiply both sides by

He said confidently after performing the division on the calculator.

Now, to get from a decimal fraction to a percentage, you just move the decimal point two places to the left.

John

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