In a quiz competition, Ravi gave answers of 70% of the questions. He failed to give answers of six questions. Find the total number of questions asked in the quiz competition.(7th class math)

Solution:Given Ravi gave answers = 70%

Ravi not gave answer = 30%

Ravi failed to give answers = 6 question

Let the total number of question asked in the quiz = X

According to question,

30% x X = 6

30/100 x X = 6

X = _6 x 100_

X = 20 question

Therefore,the 20 question asked in the quiz competitions.

From a rope of the length 40 metres,a man cuts some equal sized pieces.How many pieces can be cut if each piece is of 4/9 metres length?(7th class math)