A company has 3 category of Labours, Category A, B and C. 1 Labour of Category A, 3 of B and 4 of C can do a piece of work in 96 hrs, 2 of A and 8 of C can do it in 80 hrs, 2 of A and 3 of B can do it in 120 hrs, 5 of A and 12 of C can do it in

A company has 3 category of Labours, Category A, B and C. 1 Labour of Category A, 3 of B and 4 of C can do a piece of work in 96 hrs, 2 of A and 8 of C can do it in 80 hrs, 2 of A and 3 of B can do it in 120 hrs, 5 of A and 12 of C can do it in
1). \(39\frac{1}{{11}}{\rm{hrs}}\)
2). \(42\frac{7}{{11}}\;{\rm{hrs}}\)
3). \(43\frac{7}{{11}}{\rm{\;hrs}}\)
4). 44 hrs

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