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Four people shared a dinner with an $80 bill and tipped the waiter 15

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Joined: 02 Sep 2009
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Four people shared a dinner with an $80 bill and tipped the waiter 15 [#permalink]

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New post 08 Jun 2018, 23:59
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91% (00:26) correct 9% (00:26) wrong based on 22 sessions

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Four people shared a dinner with an $80 bill and tipped the waiter 15 percent of this amount. If each person contributed equally to paying the bill and tip, how much did each person pay?

(A) $20.00
(B) $23.00
(C) $23.75
(D) $24.00
(E) $25.00

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Re: Four people shared a dinner with an $80 bill and tipped the waiter 15 [#permalink]

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New post 09 Jun 2018, 02:03
Bunuel wrote:
Four people shared a dinner with an $80 bill and tipped the waiter 15 percent of this amount. If each person contributed equally to paying the bill and tip, how much did each person pay?

(A) $20.00
(B) $23.00
(C) $23.75
(D) $24.00
(E) $25.00


total cost to foúr people = $80 + 0.15 * 80 ( waiters tip) = $92
cost to each person as they contribute equal amount = \(92/4\) = $23 B
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Re: Four people shared a dinner with an $80 bill and tipped the waiter 15 [#permalink]

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New post 09 Jun 2018, 03:48
Bunuel wrote:
Four people shared a dinner with an $80 bill and tipped the waiter 15 percent of this amount. If each person contributed equally to paying the bill and tip, how much did each person pay?

(A) $20.00
(B) $23.00
(C) $23.75
(D) $24.00
(E) $25.00


Since the calculation we're asked to do is straightforward, we'll just do it.
This is a Precise approach.

One way calculate is as shown above: the total is 80 +15% = 80 * 1.15 = 80 * (1 + 0.1 + 0.05) = 80 + 8 + 4 = 92 and dividing this by 4 gives 13.

An easier way to calculate is to look at each person individually:
Each paid a bill of 80/4 = 20 and 15% of 20 is 3. So each person paid 20 + 3 = $23.

(B) is our answer.
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Re: Four people shared a dinner with an $80 bill and tipped the waiter 15   [#permalink] 09 Jun 2018, 03:48
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Four people shared a dinner with an $80 bill and tipped the waiter 15

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