Here are some solved quantitative aptitude questions from  HCL.

1) A millionaire bought a job lot of hats 1/4 of which were brown. The millionaire sold 2/3 of the hats including 4/5 of the brown hats. What fraction of the unsold hats were brown.

a)1/60
b)1/15
c)3/20
d)3/5   
e)3/4

Answer is 3/20

2) 10 in 4 seconds, ? in 6 minutes

a)800
b)900
c)650

Answer is 900

3) Mohan earned twice as much as Deep.Yogesh earned rs.3/- more than half as much as deep. If the amounts earned by Mohan,Deep,Yogesh are M,D,Y respectively, Which of the following is the correct ordering of these amounts?

a)M< D < Y
b)M< Y < D
c)D < M < Y
d)It cann't be determined from the information given
e)D < Y < M

Answer is M< D < Y

4) At a special sale, 5 tickets can be purchased for the price of 3 tickets.
If 5 tickets are purchased at the sale, the amount saved will be
What percent of the original price of the 5 tickets?

a)20%
b)33.3%
c)40%
d)60%
e)66.6%

Answer is 40%