Miscellaneous Company Exam Company

A 15 lt mixture contains water with 20
5 alchohol.If 5 more lts f water added to the mixture what is the percantage f alchohol?

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Miscellaneous Company Exam Other Question
if 9x-3y = 12 and 3x-5y = 7 then what is 6x-2y = ?
[A] 5
[b] 8(correct)
[c] 11/4
[d] -2
[e] none a certain no. of men can finish a piece f work in 10 days.If however there were 10 men less it will take 10 days more for the work to be finished.How many men were there originally
a)110
b)130
c)100
d)none f these