Asmall company’s net income for the first six months of the year was $76,500 and for the last six months it was $100,000. what is the ratio of the first six months of the year to the last six months of the year in simplest form?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?