Question

Mark got 14 problems wrong in his test. His score was 72% correct. How many problems were on the test?

Answer 1

Answer:

50 problems

Step-by-step explanation:

wrong answers percentage = 100 - 72

= 28%

ATQ;

let total no. of problems be a

28% of a = 14

=>28a/100 = 14

=> a = 14 x 100/28

=> a = 50

Answer 2

X-14=72/100*x
100(X-14)=72x
100x-1400=72x
100x-72x=1400
28x=1400
x=1400/28
x=50