Infosys Company Numerical Ability Arithmetic

An Eraser,Pencil,Notebook together costs $1.00. Notebook costs more than the cost of 2 Pencils. 3 Pencil costs more than 4 Erasers. 3 Erasers costs more than a Notebook.How much does a pencil costs?

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A boy goes to school from his house.on one fourth oh his way to school, he crosses a machinery station. And on one third of his way to school, he crosses a Railway station.He crossed the machinery station at 7:30 and he crosses the Railway station at 7:35.when does he leave the house & when does he reach the school ? 3,6,13,26,33,66, ?