Question

In a quiz competition, Ravi gave answer of 70% of the question. He failed to give answers of six questions. Find the total number of questions asked in the quiz competition.

Answer 1

70% of the questions were answered.
Remaining 30% unanswered.
This 30% is equal to those 6 questions.
30%==6
1% == 6/30 = 0.2
100%==0.2*100 = 20 questions
Total number of questions = 20.
Hope it helps.

Answer 2

number of questions he failed to answer=6

percentage of questions he failed to answer=30%(100%-70%)

30%=6

let the total number of questions asked in the quiz competition

be x.

$\huge \bold \purple{ 30\% \: of \: x = 6}$

$\frac{30}{100} \times x = 6$

$\frac{3}{10} \times x = 6 \\ \implies \: x = 6 \times \frac{10}{3}$

$\implies x = 2 \times 10 \\ \implies x = 20$