Quantitative Aptitude - Arithmetic Ability Questions

S does half as much work as T in 1/7 of the time taken by T. If together they take 21 days to complete a work, then how may days shall S take to complete that work alone?

The average weight of 10 parcels is 1.7 kg. Addition of another new parcel reduces the average weight by 60 gram. What is the weight , in kg, of the new parcel?

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

Two numbers are in ratio 3:4. When 3 is subtracted from both the numbers, the ratio becomes 2:3. Find the sum of the numbers.

If 31x + 31y = 403, then what is the average of x and y?

If x - y = -6 and x + y = 16, then x2- y2 is?

The difference between cost price and selling price is Rs 12.54. If loss percentage is 33%, then what is the cost price (in Rs)?

The average of four consecutive odd numbers is 64. What is the value of largest number?