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John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 02:42
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Competition Mode Question John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar bills. If John needs to pay exactly $128, what is the least number of bills he will need to use? A. 14 B. 16 C. 17 D. 19 E. 20
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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 02:55
least bills 12*10+1*5+3*1 ; 128$ i.e 12+1+3 ; 16 bills IMO B
John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar bills. If John needs to pay exactly $128, what is the least number of bills he will need to use?
A. 14 B. 16 C. 17 D. 19 E. 20



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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 03:17
12 tendollar bills, 1 fivedollar bills, and 3 onedollar bills equals $128,......Total no.of bills is 16
OA:B
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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 03:19
For the least possible number of notes, John has to use 12 out of his 13 $10 bills, 1no. $5 bill, and 3no. $1 bill. Hence total = 12+1+3 = 16 i.e. 12*10 + 1*5 + 3*1 = 120+5+3 = $128
The answer is therefore B.



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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 03:37
John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar bills. If John needs to pay exactly $128, what is the least number of bills he will need to use? A. 14 B. 16 C. 17 D. 19 E. 20 To reach near to the amount of $128, tendollar bills must be maximum in number such that it satisfies the condition. So, 10 * 13 + 5 * .. does not satisfy as it is more than 128 10 * 12 + 5 * 1 + 1 * 3 = 128 Total 16 bills 10 * 11 + 5 * 3 + 1 * 3 = 128 Total 17 bills [ Since 10 = 5 * 2, total number of bills is gong to increase here onwards because for every decrease in number of ten dollar bills there's an increase of two five dollar bills] 10 * 10 + 5 * 5 + 1 * 3 = 128 Total 18 bills (similar trend as above) Answer B.
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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 03:57
Quote: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar bills. If John needs to pay exactly $128, what is the least number of bills he will need to use?
A. 14 B. 16 C. 17 D. 19 E. 20 (12*10$)+(1*5$)+(3*1$)=128$ Thus, least number of bills= 12+1+1=16 Therefore, the correct answer is option B.



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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 04:41
Quote: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar bills. If John needs to pay exactly $128, what is the least number of bills he will need to use?
A. 14 B. 16 C. 17 D. 19 E. 20 $128=120+5+3=12•10$+1•5$+3•1$={12+1+3}={16} Answer (B)



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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 05:18
John has: —> 13 tendollar bills —> 11 fivedollar bills —> 17 onedollar bills
Exactly $128= 12*(tendollar)+ 1*(fivedollar)+ 3*(onedollar)
The least number of bills is 12+1+3=16
The answer is B.
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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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14 Oct 2019, 07:03
John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar bills. If John needs to pay exactly $128, what is the least number of bills he will need to use? Available bills, $ 10 bills = 13, $ 5 bills = 11 and $ 1 bills = 17 Need to pay exactly $ 128 = 12 * $ 10 + 1 * $ 5 + 3 * $ 1= $128 Hence, total least number of bills he will need to use = 12 + 1+ 3 = 16 A. 14 B. 16 C. 17 D. 19 E. 20 Imo. B
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Re: John has 13 tendollar bills, 11 fivedollar bills, and 17 onedollar
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