100 Math Brainteasers (Grade 7, 8, 9, 10). Arithmetic, Algebra and Geometry Brain Teasers, Puzzles, Games and Problems with Solutions (Math olympiad contest problems for elementary and middle schools) by Romanowicz Zbigniew & Dyda Bartholomew

Author:Romanowicz, Zbigniew & Dyda, Bartholomew [Romanowicz, Zbigniew]
Language: eng
Format: epub
Publisher: Tom eMusic
Published: 2012-09-04T00:00:00+00:00

56. VORACIOUS SHEEP

The flock numbers eight sheep. The first sheep gobbles up a sheaf of hay in one day; the second one takes two days to eat up such a portion; the third sheep needs three days, and the fourth four days, etc. The sheaves are identical. Which sheep will devour their hay faster: the first two or the remaining six?

57. MICHAEL THE PROFLIGATE

Michael went to the market. A quarter of an hour later, he met Matthew, a friend of his, and said: “I have already spent half the money I had on me when I came here. As it is, I am left with as much in cents as I had in dollars, but half as much in dollars as I had in cents.” Michael’s riddle got Matthew thinking. He started to wonder what sum of money Michael had brought to the market. Help him find out.

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