Posted by Patricia on Tuesday, November 17, 2009 at 8:31pm.
"Mr. Macho, my great dane, ate 125 hotdogs over a fiveday period. Each day he atee seven more hot dogs than on the previous day. How many hot dogs did he eat on the first day?"
I got 55 hot dogs. Is this right??

Math  Ms. Sue, Tuesday, November 17, 2009 at 8:35pm
Nope. How at that rate, he ate the 125 hotdogs in less than three days.
Day 1: 55
Day 2: 55 + 7 = 62
55 + 62 = 112

Math  Patricia, Tuesday, November 17, 2009 at 9:00pm
well I thought tnis was right because the question stated that he ate 7 more than the previous day..
For example day 2 55+7 + 62
Day 3: 62 + 14 = 76 (7 more than day 2)
Day 4: 76 + 21 = 97 (7 more than day 3)
Day 5: 97 + 28 = 125(7more than day 4)

Math  Ms. Sue, Tuesday, November 17, 2009 at 9:25pm
I see what you're thinking, but I believe you're wrong.
Each day he ate seven more hot dogs than on the previous day.
It seems to me the dog ate between 10 and 15 hotdogs the first day.

Math  Reiny, Tuesday, November 17, 2009 at 9:49pm
first day: x hotdogs
second day: x+7
third: x+14
fourth: x+21
fifth : x+28
x + x+7 + x+14 + x+21 + x+28 = 125
5x + 70 = 125
5x = 55
x = 11
so he ate 11, 18, 25, 32, 39
addd them up, it totals 125

Math  Patricia, Wednesday, November 18, 2009 at 12:13am
Thanks for everybodys help, I understand the math now.

Math  lexie, Wednesday, June 6, 2012 at 5:58pm
i have th exact same problem!
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