P is twice as efficient as Q. Q takes 12 days to complete a job. If both of them work together, how much time will they take to complete the job?A6 daysB5 daysC4 daysD3 daysAnswer: C. 4 daysRead Explanation:EfficiencyofP:Q=2:1</p><pstyle="color:rgb(0,0,0);margin−top:2px;margin−bottom:2px"data−pxy="true">Efficiency of P : Q =2 : 1</p><p style="color: rgb(0,0,0); margin-top: 2px; margin-bottom: 2px" data-pxy="true">EfficiencyofP:Q=2:1</p><pstyle="color:rgb(0,0,0);margin−top:2px;margin−bottom:2px"data−pxy="true">Q takes 12 days to complete the work Total work be$=12\times1=12$Both of them working together efficiecncy be 3$$Time required to complete the work $=\frac{12}{3}$$=4days$ Open explanation in App