Translate the percent word problem in a equation: If 5 is increased to 8, the increase is what percent of the original number?

If you increased 5 to 10, then I would have doubled the number 5 and this is a 100% increases.

If you increased 5 to 7.5, then this is 50% increase, because 50% of 5 is 2.5 and 5 + 2.5 = 7.5

If you increased 5 to 6, then this is a 20% increase, because 5 + 1 = 6 and 1 is 20% of 5

If you increased 5 to 7, then this is a 40% increase, because 5 increased by 2, 5 + 2 = 7, and 2/5 = 40%

If you increased 5 to x, then 5 was increased by x/5*100%

For example 5 to 9 is a4/5*100%=80% increase

So here 5 increases by 8, 5 + 3 = 8, thus the percentage increase is3/5*100%=0.006