For the following questions answer them individually
A sum becomes Rs 2286 in 3 years and Rs 2448 in 4 years at simple interest. What is the rate (in percentage) of interest per annum?
Selling price of a fan is Rs 4644. If profit percentage is 29%, then what is the cost price (in Rs) of fan?
The marked price of a helmet is 30% more than its cost price. If the helmet is sold for Rs 744 after a discount of Rs 36, then what will be the profit percentage?
S, T and U together can complete a work in 30 days. If the ratio of efficiency of S, T and U is 20: 15: 12 respectively, then in how many days U alone can complete the same work?
A train is moving at the speed of 90 km/hr. How many seconds it will take to cover a distance of 2275 meter?
The line graph shows the number of deaths due to rail accidents in a certain state. Study the diagram and answer the following questions.
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If on an average Rs 5 lakhs was paid as insurance for each death due to a rail accident, then how much insurance was paid (in Rs crore) in the year 2014 ?