The average marks of class 7th is 45 marks.
Average marks of boys is 40 and ratio of
boys and girls in the class is 4:5. Find
the average marks of girls?
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50 is the answer I think
Sumantachary:
ok then ask if i can help you so i will try
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A B and C can complete a work in 35,42,28 days respectively.if all a b and c together start the work and a leave the work 2 days before completion of work find the total time in wich work will finished
i think the work will be able to finish in 107 days bt I am not sure
this is not
option is 10,15,18and 12
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