mubasharshafiq6380 mubasharshafiq6380
  • 09-06-2019
  • Mathematics
contestada

Dev thinks of a whole number. He multiplies it by 4. He rounds his answer to the nearest 10. The result is 50. Write all the possible number that Dev could have started with.

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sqdancefan
sqdancefan sqdancefan
  • 09-06-2019

Answer:

  {12, 13}

Step-by-step explanation:

Whole numbers that round to 50 will be in the range 45 to 54. Multiples of 4 in that range are 48 and 52.

  48 = 4·12

  52 = 4·13

Dev's number could be either 12 or 13.

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