Dịch

A man sets out on cycle from Meerut to Delhi and at the same time another man starts from Delhi to Meerut on cycle. After crossing each other they complete their journeys in 9 h and 16 h respectively. At what rate does the second man cycle if the first cycles at 16 km/h?

ai giúp mình với mình ko hiểu sao kq là 12km/h
Dịch