My mother says, in her childhood petrol was Rs.1 a litre. It is Rs.52 per litre today. By what percentage has the price gone up?

The price of a scooter was Rs 34,000 last year. It has increased by 20% this year. What is the price now?

A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs 12 per m^2 , what will be the cost of painting all these cones (use pi = 3.14 , and take sqrt(1.04)=1.02 ) ?

A taxi- driver filled his car petrol tank with 40 litres of petrol on Mondy.The next day,he filled the tank with 50 litres of petrol.If the petrol costs Rs.44 per litre,how much did he spend in all on petrol?

A container opened from the top and made up of a metal sheet, is in the form of a frustum of a cone of height 16 cm with radii of its lower and upper end as 8 cm and 20 cm, respectively. Find the cost of made which can completely fill the container, at the rate of Rs 20 per litre. Also find the cost of metal shape used to make the container, if it costs Rs 8 per 16cm^(2) . (Take pi=3.14 )

An oil company has two depots A and B with capacities of 7000 l and 4000 l respectively. The company is so supply oil to three petrol pumps, D,E and F whose requirements are 4500 l, 3000 l and 3500 l respectively. The distance between the depots and the petrol pumps is given in the following table: Assuming that the transportation of cost of 10 litres of oil is Rs. 1 per km, how should be the delivery be scheduled in order that the transportation cost is minimum? what is the minimum cost?

A container opened from the top is made up of a metal sheet is in the form of a frustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20 cm, respectively. Find the cost of the milk which can completely fill the container, at the rate, of Rs 20 per litre. Also find the cost of metal sheet used to make the container, if it costs Rs 8 per 100 cm^2 . (Take pi = 3.14.)

An oil company has teo depots A and B with capacity of 7000L and 4000L respectively. The company is to supply oil to three petrol pumps D,E and F whose requirements are 4500L, 3000L and 3500L respectively. The distance between the depots and the petrol pumps is given in the following table: Assuming that the transportation cost of 10 litres of oil is Rs 1 per km, how should the delivery be scheduled in order that the transportation cost is minimum? What is the minimum cost?

An oil company has teo depots A and B with capacity of 7000L and 4000L respectively. The company is to supply oil to three petrol pumps D,E and F whose requirements are 4500L, 3000L and 3500L respectively. The distance between the depots and the petrol pumps is given in the following table: Assuming that the transportation cost of 10 litres of oil is Rs 1 per km, how should the delivery be scheduled in order that the transportation cost is minimum? What is the minimum cost?