D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔADE is 8 sq cm, what is the ratio of area of ΔADE: area of quadrilateral BDEC?
In a family, Virendra's weight is more than Parminder's weight. Parminder's weight is less than Kuldeep's weight but more than Gurjeet's weight. The sum of Kuldeep's weight and Tommy's weight is equal to the weight of Virendra. Who is the heaviest in the family?
In a class of 39 students there are 36 girls. The average weight of these girls is 38 Kg and average weight of the full class is 40 kgs. What is the average weight of the boys of the class?