On a day wilderness expedition you'll need to heat of water to the boiling point each day. The air temperature will average . You have available canisters of compressed butane fuel, which you'll burn to heat the water. Each canister has of butane in it. What is the minimum number of fuel canisters you must bring? The standard heat of formation of butane at is . You'll probably find other helpful data in the ALEKS Data resource.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

the answer is 12 as i may remember

: )