After deducting 60% from a certain number and then deducting 15% from the remainder, 1428 is left. What was the initial number? ?->(Show Answer!)

1. After deducting 60% from a certain number and then deducting 15% from the remainder, 1428 is left. What was the initial number?

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By: anil on 05 May 2019 01.48 am

$$frac{100-15}{100} imes frac{100-60}{100} imes X = 1428$$ $$frac{85}{100} imes frac{40}{100} imes X = 1428$$ $$Rightarrow X = 4200$$ so the answer is option A.

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