Question

Two boats leave a port at the same​ time, one going north and the other traveling south. The northbound boat travels 18 mph faster than the southbound boat. If the southbound boat is traveling at 40 ​mph, how long will it be before they are 980 miles​ apart?

Answer 1

Answer:

10 hours

Step-by-step explanation:

Two boats leave a port at the same​ time, one going north and the other traveling south.

Southbound boat rate = 40 mph

The northbound boat travels 18 mph faster than the southbound boat.

Northbound boat rate = 40 + 18 = 58 mph

Two boats rate = 40 + 58 = 98 mph (this means they are apart 98 km after one hour)

Total distance = 980 miles

Total rate = 98 mph

Time $=980:98=10$ hours