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The total value of the coins in a piggy bank is 1 dollar.

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BSchool Forum Moderator
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The total value of the coins in a piggy bank is 1 dollar.  [#permalink]

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New post 30 Jan 2019, 06:10
4
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A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

47% (02:15) correct 53% (01:50) wrong based on 55 sessions

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The total value of the coins in a piggy bank is 1 dollar. If each of the coins could be 1cent, 5cent, 10cent, 25cent or 50cent, which of the following cannot be the number of the coins in the piggy bank?

I. 76

II. 81

III. 91

(A) I only

(B) II only

(C) III only

(D) I and II only

(E) I and III only

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Re: The total value of the coins in a piggy bank is 1 dollar.  [#permalink]

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New post 31 Jan 2019, 15:22
rohan2345 wrote:
The total value of the coins in a piggy bank is 1 dollar. If each of the coins could be 1cent, 5cent, 10cent, 25cent or 50cent, which of the following cannot be the number of the coins in the piggy bank?

I. 76
II. 81
III. 91

(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I and III only


I couldn't clearly figure out the takeaways behind it,
but by simple assumptions, I got that:
75 coins from 1 cent + 1 coin from 25 cent = 100 cent with 76 coins
90 coins from 1 cent + 1 coin from 10 cent = 100 cent with 91 coins

so B IMO.
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Re: The total value of the coins in a piggy bank is 1 dollar.  [#permalink]

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New post 09 Mar 2019, 19:46
Quote:
which of the following cannot be the number of the coins in the piggy bank?


The question is asking the number of the coins; not the value of the coins.
I marked the incorrect choice because I didn't read the question properly.
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Re: The total value of the coins in a piggy bank is 1 dollar.   [#permalink] 09 Mar 2019, 19:46
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