aliaalakraf aliaalakraf
  • 15-02-2021
  • Mathematics
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In the evening, a water tank contained 30cm of water. A few days later, it contained 21 cm of water. Ahmed claims that there is a 30% decrease. is Ahmed correct

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debmc7
debmc7 debmc7
  • 15-02-2021
Yes.
30 x .30 = 9 cm is a 30% decrease
30-9= 21 cm
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