12.5 % of 192 = 50 % of ?
"answer let 12.5 % of 192 = 50 % of a , ⇒ ( 12.5 x 192 ) / 100 = ( 50 x a ) / 100 ∴ a = ( 12.5 x 192 ) / 50 = 48 correct option : a"
divide(multiply(divide(multiply(50, 192), const_100), 12.5), const_100)