Quantitative Aptitude Quiz 30

Neeraj has a rectangular field of size 20 x 40 sq.mt. He has to mow the field with a mowing machine of width 1 mt. If he mows the field from the extremes to the centre, then the number of rounds taken by him to mow half of the field will be

The sum of two odd functions

Rajat draws a 10X10 grid on the ground such that there are 100 identical squares numbered 1 to 100. If he has to place to two identical stones on any to separate squares in the grid, how many disticcts ways are possible?

One man can do as much work in one day as a woman can do in 2 days. A child does one third the work in a day as a woman. If an estate-owner hires 39 pairs of hands, men, women and children in the ratio 6 : 5 : 2 and pays them in all Rs. 1113 at the end of the days work. What must the daily wages of a child be, if the wages are proportional to the amount of work done?

15 men take 10 days to complete the job working 12 hours a day. How many hours a day should 10 men work to complete the job in 20 days