a drum of kerosene is 3/4 full . when 80 litres of kerosene is drawn from it, it remains 7/2 full . the capacity of the drum is?
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The answer is 180 litres. I think this question is from the R.S. Aggarwal 8th Grade ICSE book, right? According to this website: https://icsehelp.com/linear-equations-class-8-rs-aggarwal-icse-maths-goyal-brothers/#mcq, I think the sum is a typo so just change the 7/2 ----> 11/36.
Step-by-step explanation:
3x/4- 80 = 11x/36
=> 3x/4 - 11x/36 = 80
=> 27x/36 - 11x/36 = 80
=> 16x/36 = 80
=> x = 80 * 36/16
=> x = 180 litres
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