Im getting really confused on making decimals back into fractions it takes me way too long going through each answer choice. is there a easier way? for ex. express 15.56 as a mixed number in lowest terms. a.) 15 28/45b.) 15 14/25c.) 389/25d.) 469/30

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?