Question
Monthly income of A is Rs. 3500 and he saves 42% of his
monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is increased by 35% then find the increase or decrease in his monthly income.Solution
Monthly savings and expenditure of A initially is Rs. 1470 and Rs. 2030, respectively. Monthly expenditure of A now = 0.65 × 2030 = Rs. 1984.5 Monthly savings of A now = 1.35 × 1470 = Rs. 1319.5 Monthly income of A now = 1984.5 + 1319.5 = Rs. 3304 Desired percentage decrease = [(3500 – 3304)/3500] × 100 = 5.6%
A train covers a certain distance at a speed of 24 km/h and the next same distance with a speed of 42 km/h and the next same distance with a speed of 72...
500 metres long train crosses a man who is moving in the same direction with a certain speed, in 50 seconds. If the same train can cross a tree in 20 se...
Car 'E' traveling at a certain speed covered a certain distance in 5 hours. Car 'F,' which is 50% faster than Car 'E,' traveled for 4 hours and covered ...
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 247.5 km away, then the usual speed of...
- Karan walks at a steady pace of 12 km/h and covers a certain distance in 10 hours. What speed must he maintain to complete the same journey in 6 hours?
‘A’ and ‘B’ started moving towards each other at same time with a speed of 23 km/hr and 10 km/hr, respectively. If the di...
A boy goes to school with a speed of 45 km/h and comes back with a speed of 30 km/h. find his average speed?
A Bike covers a distance of 150 km in 90 minutes. If its speed is reduced by 25 km/h, how much time will it take to cover the same distance?
John travelled a total distance of 432 km. He covered 5/8 of this distance at a constant speed of 30 km/h. To complete the entire journey in 13.5 hours,...
Rohan and Tanuj move towards Dehradun starting from Delhi at a speed of 30 km/h and 50 km/h respectively. If Tanuj reaches Dehradun 300 minutes earlier ...
Relevant for Exams:
