App Logo

No.1 PSC Learning App

1M+ Downloads
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 days

B5 days

C4 days

D3 days

Answer:

C. 4 days

Read Explanation:

EfficiencyofP:Q=2:1</p><pstyle="color:rgb(0,0,0);margintop:2px;marginbottom:2px"datapxy="true">Efficiency of P : Q =2 : 1</p><p style="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 $=\frac{12}{3}$

$=4days$


Related Questions:

Two pipes A and B can fill a tank in 6 hours and 9 hours respectively. They are opened alternately for 1 hour each starting with pipe A first. In how many hours the tank will be filled?
ഒരു നിശ്ചിത ദൂരം പിന്നിടാൻ എടുക്കുന്ന സമയം 20 % കുറക്കാൻ ഒരു ഓട്ടക്കാരൻ തന്റെ വേഗത എത്ര ശതമാനം വർധിപ്പിക്കണം ?
Efficiency of A is twice more than that of B. If B takes 28 days more to finish a work, In how many days; (A + B) will complete the whole work?
12 men and 16 women can complete a job in 5 days. 13 men and 24 women can complete the same job in 4 days. How long in days, will 5 men and 10 women take to complete the same job?
One tap can fill a water tank in 40 minutes and another tap can make the filled tank empty in 60 minutes. If both the taps are open, in how many hours will the empty tank be filled ?