luvdeadrose luvdeadrose
  • 22-05-2020
  • Mathematics
contestada

A mystery number is a factor of 100 and a common multiple
of 2 and 5. The sum of its digits is 5. What is the number?

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MathPhys
MathPhys MathPhys
  • 22-05-2020

Answer:

50

Step-by-step explanation:

The number is a common multiple of 2 and 5, which means it is a multiple of 10.  So the last digit is 0.

The sum of the digits is 5.  The number is a factor of 100, so the only possible solution is 50.

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