A two digit number has 3 in its unit digit. The sum its digits is one seventh of the number itsself. What is the number?

A wholesaler sells goods to a retiler at profilt of 20%. The retailer sells to the customs ,Who pays 80% more...

If an integer y is subtracted from an integer x, and the result is grater than x, then y must be.

A train went 300 km from City to city at an average speed of 100 km/h. At what speed did it travel on the way...

Of two groups of tourists, each has 60 people/. If threee fourth (i.e 75%) of the first group and two third of...

Six consecutive whole numbers are given. The sum of the first three numbers is 27 What is the sum of the last...

Three individuals contributed Tk. 8000 each toward the purchase of a computer. If they bought the computer on...