Question 1181571: Susie's age this year is a multiple of 5. Next year, her age is a multiple of 7. What is her present age? using the polya's method
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52788)   (Show Source):
You can put this solution on YOUR website! .
Consider the list of multiples of 5
5 10 15 20 25 30 35 40 45 50 55 60 65 70
Add 1 to each of the number from the list
6 11 16 21 26 31 36 41 46 51 56 61 66 71
Now by "trial and error" method, find the numbers in the last list, that are multiple of 7.
The numbers you will find, are 21 and 56.
Now make one year step back.
ANSWER. Her present age is EITHER 20 OR 55 years.
Solved, answered and carefully explained.
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website! Susie's age this year is a multiple of 5. Next year, her age is a multiple of 7. What is her present age? using the polya's method
It all depends! If Susie is a person, then she could be 20, 55, 90, or maybe even 125. Two of many other multiples/ages are 160 and 195.
With these ages, you're venturing into the lifespan of whales, jellyfish, and sharks - a few of the creatures that can live very long.
Another CLUE would have to be given in order to arrive at a specific age, if thatw's the intended goal.
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