For the following questions answer them individually
What number must be subtracted from each of the numbers 55, 23, 43 and 19, so that the new values are in proportion?
The price of diesel increases by 5% every year. If the current price of diesel is ₹80 per litre, then what will be the price of diesel per litre after 2 years?
A person has some coins of ₹10, ₹5, and ₹2 denominations. The ratio of the products of the numbers of ₹10 and ₹5 coins, the numbers of ₹5 and ₹2 coins, and the numbers of ₹2 and ₹10 coins is 3: 4: 2 respectively. What could be the minimum amount of money this person has?
A can do a piece of work alone in 30 days. B is 25% less efficient than A, while C is $$33\frac{1}{3}$$% more efficient than B. In how many days can A, B and C, working together, complete the work?
A man can row downstream at a speed of 15 km/h and upstream at 11 km/h. Find his speed in still water and the speed of the current, respectively. [Give both your answers in km/h]
In India, by which one of the following institutions one rupee currency notes and coins are issued?
