Question
A Student was asked to add 8 and subtract 5 from a
number. By mistake, he added 5 and subtracted 8. If his answer is 11, what should be the correct answer?Solution
Let the number be x And the correct answer be y According to the question x + 8 – 5 = y x + 3 = y ...................(i) Again, x + 5 – 8 = 11 x = 14 Put the value of x in (i) We get, 14 + 3 = y y = 17
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