What is the percent of increase from 25 to 40?

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Answer 1 · 2016-08-18T16:24:35

#=60%#

#(40-25)/25times100#

#=15/25 times 100#

#=60%#

Answer 2 · 2016-08-18T16:33:24

#60%# increase

Using the shortcut method

#("change")/("original value") xx100# ...................Equation(1)

Some people say you should write this as:

#("change")/("original value") xx100%#....................Equation(2)

Which I do not agree with.

However; if you wrote it as:
#color(green)("as a percentage the change is:"->(("change")/("original value") xx100)%)#

Then I do agree. There is a very subtle difference.
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I am going to use equation type (1)

#(40-25)/25xx100 =cancel( 150) larr" error"#

#15/25xx100=60#

Write as 60%

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~