Answer: A. 81/625
Step-by-step explanation:
From the question, we are informed that there are 4 traffic signals on ones way to work, and there's a 60% chance of making each one, independent of whether or not the previous one is made.
The probability that one will make it to work on time will be to multiply 60% for the 4 period. This will be:
= 60% × 60% × 60% × 60%
= 60/100 × 60/100 × 60/100 × 60/100
= 3/5 × 3/5 × 3/5 × 3/5
= 81/625
