Quantitative Aptitude - Arithmetic Ability Questions

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

I. x2+ 30x + 81 = 0

II.y2-9y -162 = 0

Reflection of the point (2,-4) in the origin is

A starts a cement trading business by investing Rs 5 lakhs. After 2 months, B joins the business by investing Rs 10 lakhs and then 4 months after B joined C too joins them by investing Rs 20 lakhs. 1 year after A started the business they make Rs 3,50,000 in profit. What is B's share of the profit (in Rs)?

If x + y = 13 and x2 + y2 = 89, then find xy is

What is the unit digit of 15+25+35+...+205 ?

If the product of two numbers is 2400 and their LCM is 96 then their HCF is

If cos ­-11π/6 = x, then the value of x is

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and DE are 8 cm, 6 cm and 7.2 cm respectively, find length of BC?