For the following questions answer them individually
An article is sold for ₹4,800 at a profit of 20%. If the selling price is increased by ₹600, then what will be the profit percentage?
What is the difference between the compound interest and the simple interest on ₹2,000 at 10% interest per annum for 2 years, if, for compound interest, interest is compounded annually?
$$P = 18 \times 9 \div 6 + 5 \times 15 \div 25$$ and $$Q = 15 \div 5 \times 5 - 25 \div 5$$, what is the value of $$(P \div Q)$$?
If A, B and C are three distinct prime numbers, then what is the highest common factor of A, B and C?
What is the value of 'p' in the following equation?
$$64 - [ 16 + \left\{ 23 - ( 12 + 10 )\right\}] = p$$
If the mean of two numbers is 12, and the difference between the two numbers is 6, find the two numbers.
The average of $$T_{1}$$ and $$T_{2}$$ is 15. The average of $$T_{3}$$ and $$T_{4}$$ is 35. What is the average of $$T_{1}, T_{2}, T_{3}$$ and $$T_{4}$$?
Tap A can fill an empty tank in 8 hours if no other tap is open, and tap B can empty the same tank, when filled, in 12 hours, when no other tap is open. Find the time taken to fill the same tank, when empty, if both the taps are opened together.