Grace gives her sister a riddle: I have number x. I add 15 to twice x to get result A. I subtract 4 from x to get result B. I multiply result B by 3 to get result C. Result A is equal to result C. Grace's sister said the riddle cannot be solved, But Grace thought otherwise. Who is right? Explain

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24 December, 21:56

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Ireland Schaefer · Answer 1

Let's follow step by step.

15 + 2x = A

x - 4 = B

3b = C

A=C

I'm not sure who is right, but I hope this clears up the air

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