Question

What is the result when 78 is increased by 9.5%

Answer 1

Shortcut 

Multiply 78 by 1.095  (the 1 in front will include the 78 since 78x1=78) and you won't have to add at all.
Try it with a calculator and you will get the same 85.41

Answer 2

First you must find what 9.5 percent of 78 is. To do so, put 9.5 percent as a decimal (.095). Next, take this (.095) decimal and multiply it by 78 (this gives you 9.5 percent of 78). You will end up with the number 7.41. Since 78 is being increased by 9.5%, add 7.41 to 78 to get the final answer of 85.41. Therefore, when 78 is increased by 9.5%, you get 85.41 as a result.