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When the positive integer \(x\) is divided by the positive integer \(y,\) the quotient is \(3\) and the remainder is \(z

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When the positive integer \(x\) is divided by the positive integer \(y,\) the quotient is \(3\) and the remainder is \(z

by VJesus12 » Thu Apr 08, 2021 12:18 pm

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When the positive integer \(x\) is divided by the positive integer \(y,\) the quotient is \(3\) and the remainder is \(z.\) When \(z\) is divided by \(y,\) the remainder is \(2.\) Which of the following could be the value of \(x?\)

I. \(5\)
II. \(8\)
III. \(32\)

A. I only
B. II only
C. III only
D. I and II only
E. I, II, and III

Answer: C

Source: GMAT Club Tests
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Re: When the positive integer \(x\) is divided by the positive integer \(y,\) the quotient is \(3\) and the remainder is

by swerve » Fri Apr 09, 2021 5:36 pm
VJesus12 wrote: ↑
Thu Apr 08, 2021 12:18 pm
 When the positive integer \(x\) is divided by the positive integer \(y,\) the quotient is \(3\) and the remainder is \(z.\) When \(z\) is divided by \(y,\) the remainder is \(2.\) Which of the following could be the value of \(x?\)

I. \(5\)
II. \(8\)
III. \(32\)

A. I only
B. II only
C. III only
D. I and II only
E. I, II, and III

Answer: C

Source: GMAT Club Tests
Here we have two equations,

\(\dfrac{x}{y}=3+z\quad\) and \(\quad \dfrac{z}{y} = k+2\)

Now, let's start plugging in the options -

I. 5 - No possible satisfying conditions can be found out.
II. 8 - No possible satisfying conditions can be found out.
III. 32 - Let's try

\(\dfrac{32}{y}=3+z \quad \Longrightarrow \quad \dfrac{32}{9}=3(\text{Quotient})+5(\text{Remainder})\)

Let's try the second step now

\(\dfrac{z}{y}=k+2\)

\(\dfrac{5}{y}=k+2\)

\(\dfrac{5}{3}=1(\text{Quotient})+2(\text{Remainder})\)

Therefore, C
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