Question

Two numbers are 30% and 20% less than a third number
respectively. The ratio of first two numbers is​

Answer 1

Answer: 7:8

Step-by-step explanation:

let the third number be "x"

first number = x - 30x/100

          = 10x - 3x / 10

          = 7x / 10

second number= x - 20x/100

         = 10x - 2x / 10

         = 8x / 10

Ratio =  7x/10   /    8x/10

         =  7x/10 * 10/8x

         =  7x / 8x

         =  7/8

          = 7:8

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