Question
Who is credited with inventing the
microphone?Solution
David Edward Hughes invented the carbon microphone, which is a fundamental component in sound recording and amplification devices.
The income of Tina is Rs.26000 and she saves 30% of her income. The savings of Kajal is Rs.3000 more than that of Tina and she spends 60% of her income....
If 40% of 'p' is equal to 'q', then what percentage of 40 is equal to 'p'?
- The total of two numbers ‘a’ and ‘b’ is 660. If ‘a’ is reduced by 8% and ‘b’ is increased by 20%, they become equal. Determine the value of...
In an election between two candidates 'P' and 'Q', 'P' got 55% of the votes and won by 4,400 votes. Find the number of votes received by 'Q'.
- In a school election between two contestant’s 'A' and 'B', 'A' secured 62% of the total votes and won by 7,440 votes. Find how many votes 'B' got.?
In the Reebok factory, there are two units of workers, I and II, with a strength ratio of 2:1. The ratio of male to female in Unit I is 3:1, and in Unit...
- A city’s population rose by 8% in the first year, increased by 10% in the second year, and then dropped by 12% in the third year. If the population in 20...
- Priya had Rs. 9,000 with her. She gave 10% for women empowerment, then donated 30% of what was left for environmental care, and 20% of the remaining amount...
In a zoo, 25% of the people are males. 40% of the remaining are females and the remaining 720 are children’s. Find the total number of people in a...
Preeti spends 35% of her monthly income on consumable items. Her annual income is Rs. 5.4 lac. What is the total amount that Preeti spends on consumable...
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