Changepond Placement Paper Aptitude Question Paper 20 August 2012
Aptitude Questions1. To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :A.7 DaysB.7.5 DaysC.8 DaysD.8.5 DaysAns:CEx:Given (A+B),s one day,s work = 1/8(B+C),s one day,s work =1/12(A+B+C) ,s 1 day,s work =1/6Work done by A, alone= (A+B+C) ,s 1 day,s work - (B+C),s one day,s work=1/6 - 1/12 ={2-1}/12 =1/12Work done by C, alone = (A+B+C) ,s 1 day,s work - (A+B),s one day,s work=1/6 - 1/8 ={4-3}/24 =1/24=> (A+C),s one day,s work = 1/12 + 1/24 = {2+1}/24 = 3/24 = 1/8=> (A+C) will take 8 days to complete the work together2. Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened...