If a + b = 10 and a – b = 20, then what will be the value of a/b?

Thanks for your questions, Your question is - If a + b = 10 and a – b = 20, then what will be the value of a/b? Here I'm trying to explain the details.  Hope you will be clear your question from my explanation - Explanation: According to the data given in the question, a + b =10 -----------i a – b = 20-----------ii On adding equations I and ii we get, 2a = 30 ∴ a = 15 Substituting the value of 'a' in equation I we get, 15 + b = 10 ∴ b = 10 – 15 ∴ b = -5 Hence we have the values of 'a' and 'b' as a = 15 and b = -5 Now, we have to find out the value of a/b ∴ a/b = 15/-5 ∴a/b = 3/-1 = -3 Answer=  -3