I need it quick and thank you!

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

I’m still confused on how to work the percentages

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?