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# A group of x friends agreed to equally split the bill for a meal that

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Math Expert
Joined: 02 Sep 2009
Posts: 58396
A group of x friends agreed to equally split the bill for a meal that  [#permalink]

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24 Jan 2019, 03:54
00:00

Difficulty:

15% (low)

Question Stats:

88% (00:53) correct 13% (01:35) wrong based on 20 sessions

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A group of x friends agreed to equally split the bill for a meal that cost y dollars. If z friends decide not to pay how much will each of the remaining friends have to pay, in terms of x, y, and z?

A $$\frac{y}{x – z}$$

B $$\frac{y}{z}$$

C $$\frac{y}{x}$$

D $$\frac{y}{z – x}$$

E $$\frac{y – x}{z}$$

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Joined: 31 Oct 2013
Posts: 1467
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: A group of x friends agreed to equally split the bill for a meal that  [#permalink]

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24 Jan 2019, 04:00
Bunuel wrote:
A group of x friends agreed to equally split the bill for a meal that cost y dollars. If z friends decide not to pay how much will each of the remaining friends have to pay, in terms of x, y, and z?

A $$\frac{y}{x – z}$$

B $$\frac{y}{z}$$

C $$\frac{y}{x}$$

D $$\frac{y}{z – x}$$

E $$\frac{y – x}{z}$$

Total bill = y

Number of friend will pay the bill = x - z

y/ x - z.

e-GMAT Representative
Joined: 04 Jan 2015
Posts: 3078
Re: A group of x friends agreed to equally split the bill for a meal that  [#permalink]

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24 Jan 2019, 05:12

Solution

Given:
• Total number of friends = x
• Total cost of meal = y dollars
• z number of friends decide not to pay

To find:
• Amount paid by each of the remaining friends

Approach and Working:
• Number of friends, who pay = x – z
• Thus, amount paid by each of them = $$\frac{y}{(x – z)}$$

Hence, the correct answer is Option A

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Re: A group of x friends agreed to equally split the bill for a meal that  [#permalink]

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24 Jan 2019, 05:15
Bunuel wrote:
A group of x friends agreed to equally split the bill for a meal that cost y dollars. If z friends decide not to pay how much will each of the remaining friends have to pay, in terms of x, y, and z?

A $$\frac{y}{x – z}$$

B $$\frac{y}{z}$$

C $$\frac{y}{x}$$

D $$\frac{y}{z – x}$$

E $$\frac{y – x}{z}$$

actual division y/x
since z friends backed out
so
left with x-z
y/x-z
IMO A
Re: A group of x friends agreed to equally split the bill for a meal that   [#permalink] 24 Jan 2019, 05:15
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