The following table shows the number of units of product produced and sold by a company during six years.

In which two years were the maximum units sold?

If the difference of interest of two banks of Rs 500 is Rs 2.50, find the difference between their rates.

Ram sold an article for Rs 380 at some profit. Had he sold it for Rs 300, then there would have been a loss equal to one-third at the initial point. What was the cost price of the article? 

Directions: The bar graph, given here, shows the number of tickets sold by 6 students A, B, C, D, E and F during a fair. 

Which student sold the least tickets?

8 men working for 9 hours a day complete a piece of work in 20 days. In how many days can 7 men working for 10 hours a day complete the same piece of work?

If the curved surface area of a right circular cone is 10010 sq cm and its slant height is 91 cm, find its total surface area.

A borrowed Rs.1500 at 4% per annum and Rs.1400 at 5% per annum for the same period. He paid Rs.390 as total interest. Find the time for which he borrowed the sum.

Find the value of $$ {5^{1\over2}-[3^{1\over4}+6-4÷2]}$$