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Q: The sum of two numbers is 80 and their difference is 8. The ratio of the first number to the second number will be:
  • A. 13 : 9
  • B. 12 : 11
  • C. 13 : 11
  • D. 11 : 9
Correct Answer: Option D - Let the numbers is a and b According to the question, a + b = 80 ...(i) a – b = 8 ...(ii) From equation (i) and (ii), 2a = 88 a = 44 and, b = 36 then, a : b = 44 : 36 = 11 : 9
D. Let the numbers is a and b According to the question, a + b = 80 ...(i) a – b = 8 ...(ii) From equation (i) and (ii), 2a = 88 a = 44 and, b = 36 then, a : b = 44 : 36 = 11 : 9

Explanations:

Let the numbers is a and b According to the question, a + b = 80 ...(i) a – b = 8 ...(ii) From equation (i) and (ii), 2a = 88 a = 44 and, b = 36 then, a : b = 44 : 36 = 11 : 9