For the following questions answer them individually
What is the value of $$1980 \div 9 + \left[-77 + \left\{- 1980 + \left(\frac{1}{4} of 7920\right)\right\}\right]$$ ?
Vinod had ₹10,000 with him. He lent a part of it at 8% per annum simple interest and the remaining at 10% per annum. His total annual income was ₹880. Find the sum lent at 8%.
During his entire school life, John’s average marks in science was 80% and his average marks in mathematics was 90%. If his combined average marks in science and mathematics was 84%, while the total marks obtained by him in science was 54,000, what was John’s total marks obtained in mathematics?
Namitha gives a 20% discount on all things in her shop and yet makes a profit of 12%. What is the cost price of an item with marked price of ₹280?
Aman has taken a loan of ₹50,000 from a bank at the rate of 8% to be compounded annually. How much does he have to pay after 3 years? (Nearest to a ₹)
Study the given bar graph and calculate the average number of girls studying in the $$5^{th}$$, $$6^{th}$$ and $$8^{th}$$ grades.
In an election between Ram and Shyamal, one got 30% of the total votes and thus lost by 900 votes. If 90% of the voters voted and no invalid or illegal votes were cast, then what was the numbers of voters in the voting list?
As per the data on the basis of which the following bar graph has been constructed, how many students were surveyed?