In the given figure, $∠BAC = 120º$ and $AD$ is the bisector of$∠BAC$. If $\frac{(AD)(AB)}{BD} = \frac{AE}{EC}( AE + EC )$ and $∠EDC = ∠ECD$, what is the ratio of $∠B$ and $∠C$?

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C? A. Rs. 375 B. Rs. 400 C. Rs. 600 D. Rs. 800

In a class of 51 students, the difference between the highest mark and the least mark is 70. If the average score is calculated without considering the student who got the highest mark, then the average score decreases by 1%. If the average score is calculated without ... least mark, then the average score increases by 1.33%. What is the original average score of the class? 60 70 80 40

What is the area of the triangle? I. Two sides are 41 cm each II. The altitude to the third side is 9 cm long. if the questions can be answered with the help of both the statements but not with the help of either statement itself. if the question can not be ... the question can be answered with the help $0$ statement $II$ alone if the question can be answered with the help of statement $I$ alone

What is the length of the rectangle ABCD? I. Area of the rectangle is 48 square units II. Length of the diagonal is 10 units If the questions can be answered with the help of both the statements but not with the help of either statement itself. If the question can ... can be answered with the help $0$ statement $II$ alone If the question can be answered with the help of statement $I$ alone

Choose the correct option: AB is perpendicular to BC and BD is perpendicular to AC. CE bisects the angle C; $\angle A=30^{\circ}$ Then, what is $\angle CED$? $30^{\circ}$ $60^{\circ}$ $45^{\circ}$ $65^{\circ}$