The gas tank of dave’s car has a capacity of 12 gallons. the tank was 38 full before dave filled it to capacity. it cost him $2.50 per gallon of gas. how much did dave spend, in dollars, to fill the tank to capacity?

$ 18.75            

Explanation:

given,                                              

capacity of the Dave’s car = 12 gallons

Assuming that the tank is 3/8 full before

Cost of gas per gallon =  $2.50 per gallon of gas

Volume Dave have to fill                      

       =                          

       = of full tank              

       =              

volume Dave have to fill = 7.5 gallons          

total money Dave spent                  

     = 7.5 gallons x $2.50                

     = $ 18.75                                            

Dave have to spend $ 18.75 to fill tank to it capacity.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.