james took a 3 - hour bike ride . in the second hour he traveled 30 miles , which was 20 percent farther than he traveled the first hour . if he traveled 25 percent farther in the third hour than he did in the second hour , how many miles did jose travel during the entire ride ?
let the distance travelled in the first hour be x . thus , 1.2 x = 30 , x = 25 . now , the distance travelled in the 3 rd hour = 30 + 1 / 4 â ˆ — 30 = 37.5 the only option ending with a 0.5 in the decimal place is c . answer : c
add(add(multiply(divide(subtract(const_100, 20), const_100), 30), 30), multiply(divide(add(const_100, 25), const_100), 30))