Quantitative Aptitude - Arithmetic Ability Questions

A boat cover row 12 km upstream in 4 hours and can cover the same distance downstream in 3 hours. What is the speed (in km/hr) of the boat in still water?

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

Area of _____ equals half the product of its diagonal.

Select the odd word/letters/number/number pair from the given alternatives.

If α + β = 90° and α:β = 2:1, then the ratio of cosα to cosβ is

What is the value of Tan 45° + 4/√3 Sec 60°?

What is the value of sin 300°?

Of the three numbers, the average of the first number and the second number is 37 more than the average of second number and third number. What is the difference between the first and the third number?