Pulling out a black pen first will grant you a 40% chance of that occurring, then when you put it back the probability of you pulling out a red pen would be 50% so in decimal form these two values would be .40 and .50 multiply these two together you should get .20 or a 20% chance. Also a written fraction would be 1/5, all of which are valid answers.
Answer:
the answer you are looking for is-10
Step-by-step explanation:
S=d/t
45=29/t
t=45/29
convert to min
t=45/29 *60=38.66min
There would be no solution.