If two planes leave the same airport at 1:00 pm, how many km apart will they at 3:00 one traverls directly at 150 km/h and the other travels directly west at 200 km/h?

If an inspector rejects 0.8% of a product as defective, how many units of the produce? will he examined in ord...

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

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...