Alloy A contains copper and zinc in the ratio 4 : 5 and alloy B contains copper and zinc in the ratio 7 : 2. A and B are taken in the ratio 7 : 4 and melted to form a new alloy. The percentage of zinc in the new alloy is closest to: (correct to two decimal places)
The percentage profit earned by selling an article for Rs. 2076 is equal to the percentage loss incurred by selling the same article for Rs. 1524. At what price should the article be sold to earn a profit of \( 33\frac{1}{3} \)%?
What will come in place of the question mark in the following question?
\( \left\{ \left( \frac{1}{2} \times 8\frac{9}{11} \right) + 6\frac{5}{22} \right\} \times 2 + 1\frac{5}{11} = ? \)
A got 60% total number of casted votes and won the election. B got 30% of remaining casted votes and other 70% votes of remaining are of NOTA. The 40000 voters did not come to vote which is 20% total eligible voters of city for election. The difference between the NOTA and the number of votes cast for B is -
The swimming speed of a person in still water is 6 km/hr. He swims upstream for 20 minutes and then downstream for 15 minutes. If he swims for 5 minutes more upstream, he will reach the starting point. Find the speed of current.
In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If the student attempts all 60 questions and scores 130 marks, the number of questions correctly answered is
The average weight of 103 notebooks in a box is 10.3 kg. When a new notebook is added to the box, the average weight goes up to 10.4 kg. Tell the weight of the new notebook.
