if p and q together can complete a job in 3days while p alone can do the same in 12days. then how many days would-be required by q to do the job alone ?​

4 days

Explanation:

You use basic inverse variation for this problem. you can also use rtd tables

t=3 days and d=1 (because the job is one job not many).

tP=12 days d=1

tQ=x    D=1

so your rate would be 1/3; 1/12; and 1/x respectively.

and since the 3 days is when p and q can do it together,

1/3=1/p+1/q

So the way to do this is:

1/3=1/12+1/x

Solve to get x=4

So it would take 4 days for Q to do it alone.

Check: 1/3=1/12+1/4;

1/3=1/3

correct.

same as the person below me

when the outside temperature is too cold, an endothermic animal can generate heat by shivering. endothermic animals must eat much more often than ectothermic animals since it takes energy to maintain a constant body temperature.