A person invested 1100 in a company at compound interest compounded semi-annually. He received 1331 after one year. The rate of interest per annum is 

Direction : The table given below represents number of bikes of five different brands sold from 2001- 2005, with the help of data given in the table, answer the following questions.

In how many years the increase of selling is greater than 10% for any brand?

The average monthly expenditure of a family for the first four months is ₹ 2570, for the next three months ₹ 2490 and for the last five months ₹3030. If the family saves ₹ 5320 during the whole year, the average monthly income of the family during the year is-

Directions: The line graph shows the number of work visas issued by a country in each year from 2011 to 2016. Study the diagram and answer the following questions . 

What is the total number of visas issued from 2012 to 2015 ? 

a and b are two whole numbers and c is their HCF, then the LCM of those two numbers is

Twice the difference between two numbers is equal to their sum. If one number is 15, find the other number.

Direction: Study the following graph and answer the given question.

What was the difference between the average amount invested in raw materials during the given period and the average value of sales of finished goods during this period?

In a ∆ABC ∠A : ∠B : ∠C  = 2 : 3 : 4 . A line CD drawn || to AB, then the ∠ACD is: