Part C - Elementary Mathematics
A shopkeeper allows a discount of 40% on his articles and still makes a profit of 20%. How much cost price does shopkeeper pay for an article whose marked price is ₹2,400?
A man covers a certain distance by scooter at 64 km/h and he returns to the starting place riding a bicycle at 16 km/h. Find the average speed for the whole journey.
5 women can complete a work in 8 days, while 8 children take 10 days to complete the same work. How many days will 2 women and 4 children take to complete the work?
The diameter of a right circular cylinder is 14 cm and height is 2 cm. The sum of its curved surface area and the total surface area is: (use π = \( \frac{22}{7} \))
A can paint a painting in 12 days. B can paint the same in 8 days. C can paint the same in 10 days. Find the (approximate) number of days in which the painting can be painted by A if he is accompanied by both B and C together on alternate days and A starts painting on the first day alone.
The population of bears in a city has been growing at 3% every year. If the present population of bears in the city is 21,218, what was the population of bears two years ago?
The income of a person is ₹95,000 and his expenditure is ₹75,000. If his income is increased by 18% and the expenditure by 12%, then what will be the percentage increase in his saving?
