Question
The value of a piece of land increases by 12% each year. If
the present value is ₹1,50,000, find the value after 2 years.Solution
ATQ,
If there is successive increase of ‘a%’ and ‘b%’ on a certain quantity/value, then the net percentage increase = a% + b% + [(a × b)/100]%
So, the net percentage increase = 12% + 12% + [(12 × 12)/100]% = 24% +
(144/100)% = 24% + 1.44% = 25.44%
So, the value of the land after 2 years = 1.2544 × 150000 = ₹1,88,160
A man can row at 36 km/hr in still water. In a stream which is flowing at 12 km/hr, it takes him 3 hrs to a place and back. How far is the place?
A Passenger boat started its journey from point A to B .After sometime when it is 156 km away from point B it is started to get sinking and passengers...
Megha got 38% of the maximum marks in an examination and failed by 6 marks. In the same examination Teena got 42% of the total marks which is 14 marks m...
A boatman takes 9 hours to cover 64 km downstream and 60 km upstream. If the ratio of his speed downstream to his speed upstream is 4:3, what is the spe...
The downstream speed of a boat is 8 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
A boat running downstream covers a distance of 24 km in 3 hrs while it covers the same distance upstream in 6 hrs. Then speed of the boat in still water is
The speed of a boat in still water is 5 times more than that of the current. If the boat takes 10 hours to cover 200 km upstream, then find the time tak...
- A boat travels 100 km upstream and 160 km downstream in 9 hours. If the speed of the boat in still water is 25 km/hr greater than the speed of the stream, ...
The speed of a boat downstream is 20% more than the speed of the boat in still water. If the boat can travel 1280 km upstream in 16 hours, then find the...
Speed of current is equal to 35% of speed of boat in still water. If the boat takes 7 hours to cover 140 km in still water, then find the time taken by ...
