Answer:
18
Step-by-step explanation:
total no. of questions - 60
percentage of correct answers - 70%
60 = 100%
? = 70%
cross multiply and divide the answer by hundred
[tex] \frac{60 \times 70}{100} \\ \\ \frac{4200}{100} = 42[/tex]
answers got correct = 42
therefore answers got incorrect = 60 - 42 = 18
answer = 18
