A certain number of men do a piece of work in 40 days. If there has been 45 men more, the work could have been finished in 25 days. The original number of men employed at the work were
In every hour, a cyclist covered 1 km more distance than he was to cover with his original speed on $1×1/4$ hour. So he covered 96 km distance early by 2 hours. The original speed of cyclist (km/hr) is