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A cell phone plan costs 20 dollars each month, plus 5 cents per text

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Bunuel
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A cell phone plan costs 20 dollars each month, plus 5 cents per text [#permalink] New post   31 Mar 2019, 21:27
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A cell phone plan costs 20 dollars each month, plus 5 cents per text message sent, plus 10 cents for each minute used over 30 hours. In January Michelle sent 100 text messages and talked for 30.5 hours. How much did she have to pay?

A. 24
B. 24.5
C. 25.5
D. 28
E. 30
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D
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Re: A cell phone plan costs 20 dollars each month, plus 5 cents per text [#permalink] New post   31 Mar 2019, 21:31
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Bunuel wrote:
A cell phone plan costs 20 dollars each month, plus 5 cents per text message sent, plus 10 cents for each minute used over 30 hours. In January Michelle sent 100 text messages and talked for 30.5 hours. How much did she have to pay?

A. 24
B. 24.5
C. 25.5
D. 28
E. 30


Text messages = 100
Call made = 30.5 hours = 30 hours and 30 minutes


Total Payment = 20$ + 100*0.05 + 0.1*30 = 20 + 5 + 3 = 28$
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Re: A cell phone plan costs 20 dollars each month, plus 5 cents per text [#permalink] New post   01 Apr 2019, 03:53
Bunuel wrote:
A cell phone plan costs 20 dollars each month, plus 5 cents per text message sent, plus 10 cents for each minute used over 30 hours. In January Michelle sent 100 text messages and talked for 30.5 hours. How much did she have to pay?

A. 24
B. 24.5
C. 25.5
D. 28
E. 30


total cost
30.5 * 60 ; 1830 mins ; 30 mins extra
20+ 5*100 'cents' + 10*30 ' cents'
28$
IMO D
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Re: A cell phone plan costs 20 dollars each month, plus 5 cents per text [#permalink] New post   26 Nov 2022, 23:25
Plan is 20$... text is 5 cent... call over 30 hours is for 10 cent ...
He sent 100 text
He talked 30.5 h ( 0.5 above the free 30h )
( 0.5h is half an hour =30 min )
So for Text " 100 text * 5 cent " = 500 cent
Convert to dollar 500/100 = 5$
So for talk " 10 cent / 100 * 30 min = 3$
Extra pays 5+3 = 8$
8$ + the price of the plan 20$
28$
Answer is D

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Re: A cell phone plan costs 20 dollars each month, plus 5 cents per text [#permalink]
26 Nov 2022, 23:25
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