The weights of 4 boxes are 70, 100, 20 and 40 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once. 

Two hours after a goods train passed a station, another train travelling at a speed of 63 km / hr following goods train passed through that station, if after passing the station the train overtakes the goods train in 7 hours What is the speed of the goods train ? 

A man walks a certain distance and rides back in 4 hours 30 minutes. he could ride both ways in 3 hours. The time required by the man to walk both ways is 

A tap drips at a rate of one drop/sec. 600 drops make 100ml. The number of litres wasted in 300 days is: 

There are three bottles of mixture of syrup and water of ratio 2 : 3,  3 : 4,  7 : 5. 10 Litres of first and 21 Litres of second bottles are taken. How much quantity from third bottles is to be taken so that final mixture from three bottles will be of ratios 1 : 1. 

Allowing 20 % and 15 % successive discounts, the selling price of an article becomes ₹ 3,060; then the marked price will be: 

A cloth merchant sold half of his cloth at a 40% profit. half of remaining at 40% loss and the rest was sold at the cost price. In the total transaction, his gain or loss will be

What least value which should be added to 1812 to make it divisible 7,11 and 14?