# percent

##### huynh anh phuong

17/04/2018 at 12:31-
Lê Anh Duy 17/04/2018 at 15:10
\(\dfrac{4}{10}=\dfrac{40}{100}=40\%\)

\(\dfrac{23}{100}=23\%\)

\(\dfrac{254}{1000}=\dfrac{25.4}{100}=25.4\%\)

\(\dfrac{7890}{10000}=\dfrac{78.9}{100}=78.9\%\)

huynh anh phuong selected this answer. -

##### Đỗ Phi Phi

26/07/2017 at 21:36-
Lee used : 100% - 20% = 80% (of the battery life)

If the phone is fully charged,the number of hours he can use the phone until it runs out of battery is : 48 : 80 x 100 = 60

The answer is : 60 - 48 = 12 (hours)

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