Question
Which of the following element is required for the
conversion of the solar energy?ÂSolution
Silicon is what is known as a semi-conductor, meaning that it shares some of the properties of metals and some of those of an electrical insulator, making it a key ingredient in solar cells. Thus, this element is required for the solar energy conversion.Â
Two numbers are less than a third number by 35% and 48% respectively. Find the percent by which the second number is less than the first.
- Ravi had a monthly income of Rs. 32000 and his monthly expenses were Rs. 25000. In the next year, his income increased by 11% and his expenses rose by 5%. ...
Anjali’s score is 40% more than Meena’s. Priya scored 150 more than the difference between Anjali and Meena. If Priya scored 270 marks, find Anjali�...
M scored 30% marks in an exam whereas N scored 270 marks in the same exam. If the score of N is 90 marks more than that of M, then find the maximum mark...
- Sneha spends 30% of her monthly income on groceries and 50% of the remaining on travel. If she saved Rs. 980 after all expenses, then how much money did sh...
A’s income exceeds that of B’s by Rs.2,000 and B’s income is 40% less than that of C’s. If the total income of all of them put t...
Monthly savings of ‘A’ is Rs. 1000 more than his monthly expenditure and his total monthly income is Rs. 8200. If his monthly income is increased by...
The value of A’s car is depreciating by 22% every year whereas the value of his house is appreciating by 16% each year as compared to the previous yea...
- If 'F' makes up 10% of 'E', then what is 'F' as a percentage of (E - F)?
A towel was 75 cm long and 120cm broad. When bleached, it was to have lost 40% of its length and 20% breadth. The percentage of decrease in area is:
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