Quantitative Aptitude - Arithmetic Ability Questions

What are the co­ordinates of the mid point of the segment joining points C(5,­-2) and D(­-1,8).

Simplify 50 + 18 - 8

What is the equation of the line passing through the point (0,­4) and making an angle of ­45° with the positive x­axis?

In a mixture, sugar and milk are in the ratio 4 : 5. If 7 litres of milk is added to it, then the ratio of sugar and milk in the new mixture becomes 2 : 3. What is the total quantity (In litres) of sugar in new mixture?

A shop keeper purchased 15 kg of sugar and 20 kg of wheat at Rs. 50 and Rs. 75 per kg respectively. On selling them, he gained 10% on sugar and 20% on wheat. What was the total sale vale?

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

In triangle ABC, O is the orthocenter and angle BOC is 120 deg. Calculate angle BAC.

Convert decimal 99 to binary.