Quantitative Aptitude - Arithmetic Ability Questions

To travel 648 km, an Express train takes 12 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 6 hours less than Rajdhani. The speed of Rajdhani is _____.

Rakesh’s present age is 36 years. If 12 years ago, Deepak’s age was one-fourth of Rakesh’s age, then after 27 years what will be the age (in years) of Deepak?

Circum center of ΔABC is O. If ∡BAC = 75 and ∡BCA = 80 degrees,

then what is the value of ∡OAC(in deg)?

If a2+b2+c2=14 and a+b+c=6, then the value of ab+bc+ca is,

Calculate the value of √3√3 + 3, if √3 = 1.732

If x = 2+32-3, then what is the value of x2+x-9 ?

Of the 5 subjects, the average marks of Rakesh in first 3 Subjects was 79 and the average marks in the last 3 subjects was 86. If his marks in the third subject was 80, then what was his average marks in all the 5 subjects?

Solve : 8,23,199.98 × 99.92 = ? × 80,000