Question
Which of the following input device is used for marking
attendance of employees/students in organizations/institutions and security purposes?Solution
The correct answer is C
Income of Ravi is Rs. 52,800, out of which he spent 35% on daily expenses, 5% on phone bills and saves the rest. If his income is increased by 15% and h...
A number when reduced by 35% gives 195. Find the number?
In order to maximise his gain, a theatre owner decided to reduce the price of tickets by 10% and as a result of this, the sales of tickets increased by ...
A man donated 10%, 16% and 28% of his income to three NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums re...
'M', 'N', and 'O' appeared in an exam. 'M' scored 40% marks in an exam which was 20 more than passing marks. Whereas 'N' scored 30% marks in the exam wh...
Raj saves Rs. 4500 more if he spends 65% of his income instead of 80%. Find the savings of Sanjay whose income is 25% more than that of Raj, and spends ...
40 Litres of water is added to 60 litres of a solution containing 40% alcohol . What is the concentration of alcohol in solution now?
Rajesh spent 40% and 20% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 15% and 30% to his mother and brother, r...
Sara has 150 kg of oranges (rotten and fresh). She sold 50% of the total oranges such that out of the remaining oranges, 30% are rotten. Find the percen...
There are 500 students in a college. 45% of them are boys. Among the boys and girls, 35% and 50% respectively are interested in music. How many students...
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