If 20 women can lay a road of length 100m in 10 days. 10 women can lay the same road of length 50m in: 

A circle with radius 42 cm is drawn. What will be length of arc of a sector subtending an angle of 60 degrees at the Centre?

The ratio of present ages of Shankar and Mohan is 7: 8 respectively. Four year hence this ratio becomes 9: 10 respectively. What is Shankar’s present age in years?

The following table shows the number of units of product produced and sold by a company over the course of six years.

The number of units of product sold in 2016 is approximately what percent more than the average number of units produced from 2012 to 2016?

If $$ {x+{9\over x}=6}$$  then find the value of $$ {x^{2}+{1\over x^{3}}}$$

The following histogram shows the height of players of a basketball team of a school.

How many players have height less than 141 cm?

P and Q are center of two circles with radii 9 cm and 2 cm respectively, where PQ = 17 cm, R is the center of another circle of radius x cm, which touches each of the above two circles externally. If ∠PRQ = 90 °, then the value of x is 

The cost of printing a book increased from Rs. 96 to Rs. 120 from the year 2013 to 2018, such that the total money spent on printing books by a printing press increased in the ratio 5 ∶ 6. If the printing press printed 200 books in the year 2013, how many books did they print in the year 2018?