Dad bakes some cookies. He eats one hot out of the oven and leaves the rest on the counter to cool. He goes outside to read. Dave comes into the kitchen and finds the cookies. Since he is hungry, he eats half a dozen of them. Then Kate wanders by, feeling rather hungry as well. She eats half as many as Dave did. Jim and Eileen walk through next, and each of them eats one third of the remaining cookies. Hollis comes into the kitchen and eats half of the cookies that are left on the counter. Last of all, Mom eats just one cookie. Dad comes back inside, ready to pig out. “Hey!” he exclaims. “There is only one cookie left!” How many cookies did Dad bake in all?
1 Comment
Professor Tempest
2/19/2016 09:50:53 pm
you have to work backwards so if there was one left after everybody ate some and mom ate one so 1+1=2.so if hollis eats half than two is half and 2+2=4 so their are four left and j and E both eat one third than 1/3+1/3=2/3. so 4=1/3 4+4+4=12 their are 12 left now. so if k eats half as many as dad did than you have to figure out how much dad ate dad had one than half a dozen so he had 1+6=7so dad ate 7 and 12+7=19. and if kate ate half of seven than she ate 3 1/2. 19+3 1/2=22 1/2
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