A wall of 100 metres can be built by 7 men or 10 women in 10 days. How many days will 14 men and 20 women take to build a wall of 600 metres 

The passing score of an exam is 33 percent. Anshul scored 160 marks but failed by 38 marks. Then what percentage marks Anshul got.

A businessman sells a commodity at 10 % profit. If he had bought it at 10 % less and sold it for Rs. 2 less, then he would have gained $$16{2\over3}\%$$. The cost price of the commodity is 

A train crosses a platform in 30 seconds travelling with a speed of 60 km / h. If the length of the train be 200 metres, then the length ( in metres ) of the platform is 

If $$ {(x+{1 \over{x}})^{2}}=3$$, the value of of $$  {x^{206}+x^{200}+x^{90}+x^{84}+x^{18}+x^{12}+x^{6}+1}$$

The number, whose square is equal to the difference between the squares of 975 and 585, is: 

If there is a reduction in the number of workers in a factory in the ratio 65 : 17 and an increment in their wages in the ratio 34 : 125, then the ratio by which the total wages of the workers should be decreased is-