Quantitative Aptitude - Arithmetic Ability Questions

A can do 1/3rd of a job in 3 days and B can do half of the job in 9 days. If they work on it together, then in how many days can they finish half of the job?

The average (arithmetic mean) amount of savings of ten students is Rs. 600. Three of the students have no savings at all and each of the others have at least Rs. 250 including Nihar, who has exactly Rs. 1300. The largest amount, in Rs., that any one student could have is

Find the odd word/letters/number from the given alternatives.

If 3x + 5y + 7z = 49 and 9x + 8y + 21z = 126, then what is the value of y?

The sum of a fraction and 4 times its reciprocal is 13/3. What is the fraction?

At what point does the line 3x + 2y = 12 cuts the Y-axis?

The point Q(a,b) is first reflected in y­axis to Q1 and Q1 is reflected in x­axis to (­6,2). The co­ordinates of point Q are

∆ABC is right angled at B. If m∠A = 45°, then find the value of (coseC + 1/√3).