# math problem solving

posted by .

mr. mancho, my great dane, ate 125 hot dogs over a five-day period. each day he ate seven more hot dogs than on the previous day. how many hot dogs did he eat on the first day

• math problem solving -

Let X be the number eaten the first day.

X + (X+7) + (X+14) + (X+21) + (X+28) = 125
5X + 70 = 125
5X = 55
X = 11

Check: 11 + 18 + 25 + 32 + 39 = 125

This couls have been obtained more easily (and without algebra) by recognizing that the number consumed on the third day (25) was the average for the five-day period.

• math problem solving -

eleven

## Similar Questions

1. ### Math

"Mr. Macho, my great dane, ate 125 hotdogs over a five-day 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?
2. ### MATH

MACHO ATE 125 HOT DOGS OVER A FIVE DAY PERIOD. EACH DAY HE AT SEVEN MORE HOT DOGS THAN ON THE PREVIOUS DAY. HOW MANY HOT DOGS DID HE EAT ON THE FIRST DAY?
3. ### 3rd grade

mr.mancho my great dane ate 125 hot dogs over a five day period. each day he ate seven more hot dogs than on the previous day. how many hot dogs did he eat on the first day.....
4. ### family math problem solving

ms. jones my great cat ate 125 hamburgers over a five day period. each day she ate seven more hamburgers than the previous day. how many hamburgers did she eat on the first day
5. ### 8th grade

mr. macho ate 125 hotdogs over a five day peroid each day he ate seven more hotdogs than the previous day. how many hot dogs did he eat on the first day.
6. ### Math

One day, a deli sold a total of 39 hamburgers and hot dogs. The revenue from these sales was \$137.35. The hamburgers were \$3.87 each and the hot dogs cost \$2.90 each. a) Write a mathematical expression for the number of burgers, x, …
7. ### Algebra

On a given day, a vendor made less than \$40 from hot dog and pretzel sales. The inequality graphed below represents the number of hot dogs (x) and pretzels (y) he could have sold and made less than \$40. Which combination of hot dogs …
8. ### Math

Mr.Macho ate 125 hot dogs over a five day period.Each day he ate seven more hot dogs than on the previous day. How many hot dogs did he eat the first day
9. ### Math

Mr.Macho ate 125 hot dogs over a five day period.Each day he ate seven more hot dogs than on the previous day. How many hot dogs did he eat the first day
10. ### Math

Mr.Macho ate 125 hot dogs over a five day period. Each day he ate seven more hot dogs than on the previous day. How many hot dogs did he eat the first day.

More Similar Questions