Quantitative Aptitude - Arithmetic Ability Questions

90% of X = 40% of Y and Y = a% of X. What is the value of a?

The average of 12 numbers is 35. If four numbers 20, 27, 15 and 29 are removed then what will be the average of remaining numbers?

Abhay and Chintan are riding their motorcycles. They start from the same point. Abhay rides 7 km North, then turns to his left and rides 4 km. In the meanwhile Chintan rides 6 km West, then turns North and rides 7 km, then turns to his left and rides 8 km. Where is Abhay with respect to Chintan?

Amar is 2 times as good a workman as Badal and therefore is able to finish a job in 15 days less than Badal. In how many days can they together complete the job?

In the following question, select the odd number pair from the given alternatives.

What is the value of 1xp-q+1+1xq-p+1?

If 35% are the passing marks. A student gets 200 marks yet fails by 24 marks. What is the maximum marks?

Consider  the  multiplication  999  ×  abc  =  def132  in  decimal  notation, where  a,  b,  c,  d,  e  and  f  are digits. What are the values of a, b, c, d, e and f respectively?