Write the ratio for the given quantities. Make sure they are expressed in the same units and in simplest form. An example is given. Will give brainliest for full answer

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

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?

Solve for n. round to the tenths place, if necessary. 14.2 cups of flour6 loaves of bread= 20 cups of flour n