A rectangular plot 55 m long and 45 m broad, has two concrete crossroads (of equal width) running in the middle of it. One parallel to the length and the other parallel to the breadth. The rest of the plot is used as lawn. If the area of the lawn is 1911 m², what is the width of each of the crossroads? (in m)

A bag contains 4 red balls, 6 green balls and 5 blue balls. If three balls are picked at random, what is the probability that two of them are green and one of them is blue in colour

In a 90 litres mixture of milk and water, percentage of water is only 30%. The milkman gave 18 litres of this mixture to a customer and then added 18 litres of water to the remaining mixture. What is the percentage of milk in the final mixture

Joe's present age is 2/7th of his father's present age. Joe's brother is 3 years older to Joe. The respective ratio between present ages of Joe's father and Joe's father is 14:5. What is Joe's present age

A wholesaler blends two varieties of tea, one costing INR 60 per kilo and another costing INR 105/- per kilo. The respective ratio of quanitites they were mixed in was 7 : 2. If the sold the mixed variety at INR 100 per kilo, how much was his profit percentage

A took a certain sum as loan from bank at a rate of 8% simple interest per annum. A lends the same amount to B at 12% simple interest per annum. If at the end of five years, A made profit of INR 800/- from the deal, how much was the original sum