So, Katherine can do 0.1 of the job per hour. (if she needs 10 hours for the job, each hour she can do the whole divided by the time, so 1/10, which is 0.1)
if in two hours she and Marina can be done, then Marina will do 1(the whole job)-2/10 (twice as much as she can do in an hour)=0.8 of the job. So if Marina does 0.8 of the job in two hours, each hour she will do half of it: 0.4 - and this is the correct answer
Answer:
C)3
Step-by-step explanation:
Because there is 3 letters between that. Also if its a measurment one than u forgot the picture!!!!!
hope this helps :)
-q -p is the contrapositive of p q
Answer:
C is the answer for this one
