three numbers are in the ratio 4 : 5 : 6 and their average is 42 . the largest number is :
"explanation : let the numbers be 4 x , 5 x and 6 x . therefore , ( 4 x + 5 x + 6 x ) / 3 = 42 15 x = 126 x = 8.4 largest number = 6 x = 50.4 . answer d"
add(multiply(multiply(4, 6), const_100), multiply(5, 6))