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One common factor of two numbers is 40. Another common factor is 10. If both numbers are less than 100, what are the two numbers?
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One common factor of two numbers is 40. Another common factor is 10. If both numbers are less than 100, what are the two numbers?
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Dec 12, 2019
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One common factor of two numbers is 40. Another common factor is 10. If both numbers are less than 100, what are the two numbers?
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Only two numbers less than 100 have a factor of 40: 40 (1 x 40) and 80 (2 x 40). Since 40 is a factor of both 40 and 80, 10 must also be a factor - indeed, 40 = 4 x 10 and 80 = 8 x 10.
The two number must be 40 and 80.
Giles
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Dec 17, 2019
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