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Add 2 to me. Then multiply by 5 and subtract 10 and divide new by 4 and I will give you 15! Who am I?

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Add 2 to me. Then multiply by 5 and subtract 10 and divide new by 4 and I will give you 15! Who am I?

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According to the problem {[(I + 2) x 5] – 10} ÷ 4 = 15 

{[(I + 2) x 5] – 10} = 15 x 4 = 60 

I + 2 = \(\frac{70}{5}\) = 14 

(I + 2) x 5 = 60 + 10 = 70 

I = 14 – 2; I = 12

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