Asked by Emmy

Martha wants to buy a new bike that costs $79, including tax. She currently has $15 saved. She began a dog walking business to earn the remaining money needed to buy the bike. She charges $5 for each dog she walks. What is the fewest number of dogs that Martha needs to walk to have enough money to buy the bike?
Help Me Please
Answered by Ms. Sue
(79 - 15) / 5 = ________ dogs

Remember, she can't walk a fraction of a dog.

Answered by Emmy
So the answer is 64/5=12.8 so basically it would be 12 or 13
Answered by Ms. Sue
Which is it? 12 or 13? Only one of these answers is correct.

Answered by Emmy
Its fewest which is 12
Answered by Ms. Sue
But 12 * 5 is 60. That isn't enough.

Answered by Emmy
Do 12*5+15=75.
Answered by Ms. Sue
Yes. But the bike costs $79.

She needs $64.

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