Posted by **Jaycee** on Monday, January 9, 2012 at 5:31pm.

Lyle wanted change for a $100 bill. He wanted at least three $20 bills, one $10 bill, one $5 bill and seven $1 bills. What is the least number of bills Lyle could have received?

A. 18

B. 16

C. 17

D. 15

I don't get how to get the answer

- Math -
**Jaycee**, Monday, January 9, 2012 at 5:34pm
How do you get the answer?

- Math -
**Ms. Sue**, Monday, January 9, 2012 at 5:38pm
(3 * 20) + 10 + 5 + 7 = $82 >> 12 bills

100 - 82 = 18

10 + 5 + 3 = 18

12 + 3 = 15

- Math -
**Jaycee**, Monday, January 9, 2012 at 5:43pm
So it's D?

- Math -
**Reiny**, Monday, January 9, 2012 at 5:43pm
let's go with the minimums and see what we get

3 20's + 1 10 + 1 5 + 7 1's = $82 ---> 12 bills

so we are short $18

using the least number of bills, I can fill that with

$10 + $5 + 3($1) --> 5 bills

total bills = 17

- Math -
**Jaycee**, Monday, January 9, 2012 at 5:47pm
Sorry but I'm confused. Because they said its D but you said its C

I also don't get why the $82 is $12

- Math - Correction -
**Ms. Sue**, Monday, January 9, 2012 at 5:59pm
Reiny is right. I can't add. Of course, 12 + 5 = 17.

- Math -
**Reiny**, Monday, January 9, 2012 at 6:01pm
We need 12 bills to fulfill the minimum requirement.

That totals $82 (check both Ms Sue's and mine)

leaving us $18 short

the minimum way to get $18 is

one ten

one five

3 ones , for a total of 5 more bills

total = 17

BTW, nowhere was it said that $82 is $12.

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