MBA Exam Logical Reasoning Blood Relations

In a triangle ABC, a : b : c is 4 : 5 : 6 where a, b, c are the lengths of the sides opposite to angles A, B and C respectively then 3A + B is equal to

1) 240°
2) 120°
3) 180°
4) 90°

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MBA Other Question
What is the smallest integer n such that square root of n + square root of (n+2005) is an integer?

1) 217
2) 4568
3) 39204
4) 459988
 A circle is drawn inside a trapezium such that it touches all the four sides of the trapezium. The line joining the midpoints of the non-parallel sides divides the trapezium in two parts with areas in the ratio 3 : 5. If the lengths of the non-parallel sides are 6 cm and 10 cm, then what is the length (in cm) of the longer parallel side of the trapezium? kindly share approach humble request

1) 8
2) 10
3) 12
4) 14