Sam correctly answered 70% of the questions correctly on a 50 question quiz . how many did he missed

Question

50 question test .70% correct . how many wrong

Answer 1

Percentages means out of 100

 

50x70      =5x 7/1  =35          50-35= 15   missed questions  

     100

 

 

OR  100%-70% =30%              30% CAN BE WRITTEN AS .3                  50X.3  =15