6.If aˣ=(x+y+z)ʸ,aʸ=(x+y+z)ᶻ and aᶻ=(x+y+z)ˣ,then the value of x+y+z is

7.If the operation 'O' among real number is defined by x O y=x-2y,then the value of x satisfying 2x O 4=2 O x is

8.A trader fixes selling price of commodities after increasing them by 10% and offers 10 % rebate on selling prices.The percent gain or loss is

9.Three students A,B and C play cricket .The runs scored by A and B respectively are is the ratio 3:2.B's run to C's runs are also in the same ratio.Together they score 342 runs.Then the runs scored by B are

10.With an average speed of 40 km/hr,a train reaches its destination in time.If it goes with an average speed of 35 km/hr,it is late by 15 minutes .The total journey is