Johnny was able to drive an average of 23 miles per hour faster in his car after the traffic cleared. he drove 30 miles in traffic before it cleared and then drove another 190 miles. if the total trip took 7 hours, then what was his average speed in traffic?

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%