Question

8.The marks in a test decreased from 50 to 40. The percentage decrease is *

Answer 1

Answer:

25%

Step-by-step explanation:

Given:-

original marks=40  

decreased marks=30  

to find:-%decrease  

We know that:-  

decreased marks=Original marks-Decreased marks  

=40-30  

=10  

w.k.t:-  

decreased%=decreased (100) %  

original  

=10/40 (100) %    

=1000%/40    

=25%

Answer 2

Step-by-step explanation:

If total marks of the test reduced from 50 to 40, then % decrease = 10/50 x 100 = 20% decrease