A student was asked to multiply a number by 8/17. But in the place of dividing, he divided it by 8/17 and got 225 more than the actual result. Then find the number.
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A student was asked to multiply a number by  8/17. But in the place of dividing, he divided it by 8/17 and got 225 more than the actual result. Then find the number.

(a) 26

(b) 361

(c) 163

(d) 136

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Solution –

Let the number be x.

∴ According to question,

 17/8x - 8/17x = 225

⇒ 289x - 64x / 136 = 225

⇒ 225x = 225 ×136

⇒ x = 225 × 136 / 225

∴ x = 136

So, the correct option (D).

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