Question 92093
The time "t" required to empty a tank varies inversely as the rate "r" of the pumping. If a pump can empty a tank in 45 minutes at a rate of 600 kL/min, how long will it take a pump to empty the same tank if its rate is 1000 kL/min?
t varies inversely with r, so {{{t=k/r}}}
We need to find k. Let t=45 and r=600
{{{45=k/600}}}
{{{45(600)=600(k/600)}}}
{{{27000=k}}}
So our formula therefore is: {{{t=27000/r}}}
If r=1000 kL/min then:
{{{t=27000/1000}}}min
t=27 min
Happy Calculating!!!