For the following questions answer them individually
A man's annual income has increased by Rs 1.2 lakhs but the tax on income that he has to pay has reduced from 12% to 10%. He now pays the same amount of tax as before. What is his increased income (in Rs lakhs)?
A car travelling at an average speed of 72 km/hr takes 9 minutes to travel a certain distance. By how much should it increase its speed (in km/hr) to travel the same distance in 8 minutes?
Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls by a third, so it takes 3 hours more than Train A to complete the same journey? What is the speed of Train A (in km/hr)?
Two cars A and B travel from one city to another city, at speeds of 60 km/hr and 108 km/hr respectively. If car B takes 2 hours lesser time than car A for the journey, then what is the distance (in km) between the two cities?
B starts 4.5 minutes after A from the same point, for a place at a distance of 3.5 miles from the starting point. A on reaching the destination turns back and walk a mile where he meets B. If A's speed is a mile in 6 minutes then B's speed is a mile in ____ minutes?
If compound interest received on a certain amount in the $$3^{rd}$$ year is Rs. 12,100, what will be the compound interest (in Rs) for the $$4^{th}$$ year on the same amount if rate of interest is 9%?
The amount received at 10% per annum compound interest after 3 yrs is Rs 10,648. What was the principal (in Rs)?
In how many years will Rs 25,000 yield Rs 8,275 as compound interest at 10% per annum compounded annually?
What is the rate of interest if simple interest earned on a certain sum for the $$3^{rd}$$ year is Rs 1,750 and compound interest earned for 2 years is Rs 3622.5?
