Question

find the number which when decreased by 10% becomes 720.​

Answer 1

Answer:

800

Step-by-step explanation:

Let the number be X

number which when decreased by 10% becomes 720.​

                      X - 10%on X = 720

                      X - 10(X)/100 = 720

                      X = 720+ 10(X)/100

                      100 X = 72000 + 10 X

                      90 X = 72000

                          X = 800

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Verification :

             800 - 10% on 800 = 800 - 80 = 720