WEIGHTED AVERAGE
A SHIP TRAVELS FROM NEW YORK TO SOUTHAMPTON ENGLAND AT 33 MILES PER HOUR. A PLANE TRAVELING 605 MILES PER HOUR TAKES 104 HOURS LESS TIME TO MAKE THE SAME TRIP. HOW FAR APART ARE THE TWO CITIES?
2 answers
http://www.indo.com/cgi-bin/dist?place1=New+York%2C+NY&place2=Southampton%2C+UK
let the time taken for the ship be t hours
then the time taken by the plane is t-104 hours
so 605(t-104) = 33t
solve for t, then evaluate 33t
then the time taken by the plane is t-104 hours
so 605(t-104) = 33t
solve for t, then evaluate 33t
1 answer