Rajesh bought an acid bottle it is evaporative in nature. He bought acid containing 24 litres of concentrated acid. He paid at the rate of Rs.2452 per litre since he could not get them at a cheaper price.On the first day 1/8 of the acid got evaporated. On the second day 2/3 of the balance got evaporated. He forgot to close the container and on the third day 1/7 of the balance acid got evaporated . How many litres of acid is left in the container?
In this problem rate at which the acid was bought is given only to distract the attention of the reader.
On the first day 1/8 got evaporated means for the second day balance left is 7/8.
On the second day 2/3 of the balance got evaporated means 7/8 x 2/3 = 7/12 got evaporated
Balance acid left out = 7/8 - 7/12 = 7/24
On the third day 1/7 got evaporated means what is left in the container is 6/7 of the balance at the end of second day.
Quantity of acid left in the container = 7/24 x 6/7 = 1/4
1/4 x 24 = 6 litres
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