if 0.6 : 1.4 : : 2 : 4 : x , then x = ?
"explanation : 0.6 × x = 2.4 × 1.4 x = ( 2.4 × 1.4 ) / 0.6 = 24 / 10 × 17 / 10 × 1 / ( 6 / 10 ) 24 / 10 × 14 / 10 × 10 / 6 2 / 5 × 14 = 28 / 5 = 5.6 answer : option b"
divide(add(multiply(1.4, const_3.0), 1.4), 2)