if two positive numbers are in the ratio 1 / 7 : 1 / 5 , then by what percent is the second number more than the first ?
"given ratio = 1 / 7 : 1 / 5 = 5 : 7 let first number be 5 x and the second number be 7 x . the second number is more than first number by 2 x . required percentage = 2 x / 5 x * 100 = 40 % . answer : d"
multiply(divide(1, 5), const_100)