a scale 7 ft . 6 inches long is divided into 5 equal parts . find the length of each part .
"explanation : total length of scale in inches = ( 7 * 12 ) + 6 = 90 inches length of each of the 5 parts = 90 / 5 = 18 inches answer : d"
divide(add(multiply(7, const_12), 6), 5)