Maths - Percentage

 How to Find Percentage of a number.




Maths Class 5


Here is Solved examples to find the percent of a number:


1. Find 17 % of $ 1700


Solution:            


17 % of $ 1700


= 17/100 × 1700


= $289  


2. Find 10 % of 900


Solution:            


10 % of 900


= 10/100 × 900


= 90




3. Find 25/8 % of 160.


Solution:            


25/8 % of 160


= (25/8)/100 × 160


= 25/800 × 160


= 4000/800


= 5




4. Find the number if 35 % of it is 280 km.


Solution:            


Let the required number be m.


Then 35 % of m = 280    


⇒ 35/100 × m = 280


⇒ m = 280 × 100/35


⇒ m = 28000/35


⇒ m = 800


Therefore, 35 % of 800 km is 280 km