A worker suffers a 20% cut in his wage. He may regain his original wages by obtaining a rise of how much %?

Find the sum of the factors of 3240

Cost of 36 pens and 42 Pencils is Rs 460. What is the cost of 18 pens and 21 pencils?

If all three pipes are opened for 2 minutes to fill the tank each alternatively in the sequence of A then C and then B.  Calculate water filled by pipes A is what % of water filled by pipe C?

The remainder when (15²³ + 23²³⁾ is divided by 19, is  

Find the inner surface area of all walls of a rectangular room with length 7 m breadth 5 m and height 3.5 m -  

The water in a river is flowing at a rate of 4 km/hr. If the width and depth of the river are 8m and 4m respectively, then how much water will enter the sea in 15 minutes? 

If a+b+c=15 and a²+b²+c²=83 then the value of a³+b³+c³-3abc