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Today at 7:28 PM
Mathematics

Answered

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

Answer :

Today at 7:34 PM

Yes.
30 x .30 = 9 cm is a 30% decrease
30-9= 21 cm

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