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CBSE Class 10 Answered

n liters of oil is poured into a tank & it was still e% empty. How much oil must be poured into the tank in order to fill it upto brim Maths.
Asked by nishmita bandekar | 02 May, 2011, 12:00: AM
answered-by-expert Expert Answer
The n litres occupies (100-e)% of the tank.
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Proportion:
Let x litres be the capacity of the tank
n/(100-e)% = x/100%
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x = n/(100-e)%
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The tank already has n litres in it.
You need [n/(100-e)%]-n = [100n/(100-e)]-n
= [100n-n(100-e)]/(100-e)
= ne/(100-e) litres to fill the tank
Answered by | 02 May, 2011, 09:14: AM
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