Question
Monthly income of P is Rs.15000 and his monthly savings
is Rs.9600. If his monthly income is decreased by 35% and monthly expenditure is decreased by 25% then find the approximate percentage decrease in his monthly savings. TYPE 28Solution
Expenditure of P = Rs.(15000 – 9600) = Rs.5400 New Saving = (0.65 × 15000 - 0.75 × 5400) = 9750 - 4050 = Rs.5700 Decrease % in Saving = [(9600 - 5700)/9600] × 100 = 41%
A cuboidal water tank with dimensions 32 metres × 22 metres × 28 metres is filled to 40% of its total capacity . The water is then transferred to a cy...
A circular pond is surrounded by a path 2 meters wide. The diameter of the pond is 28 meters. Find the cost of constructing the path at ₹140 per squar...
The length of a plot is three times its breadth. A playground measuring 216 square metres occupies half of the total area of the plot. What is the lengt...
A boy is supposed to distribute Rs.2400 among his three friends P, Q and R in the ratio of 4:3:5 respectively, but mistakenly he distributed in the rati...
- A metal sphere with radius 17.5 cm is melted and molded into small cuboids each of size 7 cm × 5 cm × 5 cm. Determine the number of cuboids formed.
The curved surface area of a hemisphere is 72π cm2, then its radius is:
If the volume of a cylinder is 144π and the ratio of radius to its height is 3:2 then find the curved surface area of cylinder?
- If the edge of the cube is increased by 100%, then find the percentage increase in the volume of the cube.
A pipe fills a cubical tank at the rate of 196 m3 per minute in 14 minutes. If a cylindrical tank having height same as the side of a cubical...
The perimeter of a rectangular field is 480 meters and the ratio between the length and breadth is 5:3. The area of the field is:
