Question
Which tree species is commonly used in agroforestry for
its nitrogen-fixing properties, enhancing soil fertility?Solution
Acacia species are often used in agroforestry because they are known for their ability to fix nitrogen from the air and improve soil fertility through nitrogen fixation.
- The price of electricity rose by 40%. Ravi, in response, reduced his usage by 25%. Determine the change in his electricity bill.
Ravi scored 35% in an exam and failed by 40 marks. Meena scored 50% and crossed the passing mark by 20 marks. What are the passing marks of the test?
- Rohit used to earn Rs. 42,000 per month. His spending to saving ratio was 5:9. After a salary increment, he reduced his expenses by 20% and his savings inc...
A fruit seller has a certain number of apples of which 10% are rotten. He sells 91% of the remainder and then 405 apples are left. How many apples he bo...
Hari scored 70 marks in English. He scored 64% marks in Hindi and X marks in Maths. The maximum marks for each subject is 175. The overall percentage of...
Monthly income of A is Rs. 55000 out of which he spent 21%, 9% and 22% of his total income in rent, medicine and transportation, respectively. Find his ...
A girl spent 30% of her monthly income on clothing. Of the remaining, she spent on travel and food in the ratio of 4:3. If the difference of the income ...
The income of Tina is Rs.24000 and she saves 15% of her income. The savings of Kajal is Rs.2000 more than that of Tina and she spends 60% of her income....
A candidate who gets 25% marks fails by 12 marks but another candidate who gets 45% marks gets 10% more than the passing marks. Find the maximum marks.
- Ravi appeared for two papers: Physics and Chemistry. He scored 68 out of 80 in Physics and 74 out of 85 in Chemistry. Calculate his total percentage marks.
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