If U+V=80 and U:V=5:3 then find out the U-V.

If a + b + c = 0, then a³+b³+c³ is equal to 

From the peak of a hill which is 300m high, the angle of depression of two sides of a bridge lying on a ground are 45° and 30° (both ends of the bridge are on the same side of the hill). Then the length of the bridge is 

Find the greatest number which will exactly divide 200 and 320. 

 ₹ 800 becomes ₹ 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4 %, what amount will ₹ 800 become in 3 years? 

Rs. 840 are divided among A, B, C and D in such a way that the shares of A and B, B and C and C as well as C and D are in the ratios of 2 : 3, 4 : 5 and 6 : 7 respectively. The share of A is

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