Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 15 days and B in 20 days. If they work on it together for 5 days, then what fraction of work is left?

If the curved surface area of a right circular cone is 3080 sq cm and its slant height is 35 cm, find its total surface area?

A person loses 75% of his money in the first bet, 75% of the remaining in the second and 75% of the remaining in the third bet and returns home with Rs. 2 only. His initial money was

The value of 2.33+0.0272.33-0.69+0.09

The distance between the points (2, 7) and (k, -5) is 13. What is the value of k?

If 2x+4-2x+2=3, then the value of x?

If a(a + b + c) = 45, b(a + b + c) = 75 and c(a + b + c) = 105, then what is the value of (a2 + b2 + c2 )?

What is the value of [(tan 5θ + tan 3θ)/4 cos 4θ (tan 5θ – tan 3θ)]?