A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 48 years now, what was the son's age nine years back?
Raghunandan has built a cubical water tank with lid for his apartment with each outer edge equal to 1.5 m. He gets the outer surface of the tank including the base, covered with square italian tiles of side 25 cm. Find how much he would spend on tiles if the cost of tile is Rs 7200 per dozen?
Amar and Akbar can do a given work in 8 days, Akbar and Anthony do the same work in 12 days and Amar, Akbar, Anthony complete it in 6 days. In how many days can Amar and Anthony finish it?
A vendor order 2000 pieces of a particular Chinese component at Rs.25 per piece. According to his estimates, even if 5% fail to pass the quality tests,then he will make a profit of 25%. However,as it turned out,50% of the components were rejected. What is the loss to the vendor?
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
frank
Sometimes it is useful to know how large your zero is.