Question

two ships leaves their bases, 725 km apart. they travel towards each other at speed equal to 30km/h and 35km/h .in how many hours will they be 75km apart?

Answer 1

they travel towards each other, their speed = 30 + 35

                                                                                    = 65 km/hr

Given, Total Distance traveled = 725 - 75

                                                   = 650


Time = Distance/speed

        = 650/65

        = 10 hr.

Answer 2

$Answer -$

Given,

Initial distance = 725 km

Final distance = 725-75 = 650 km

Total speed = 35 + 30 = 65 km/h

So,

$time = \frac{distance}{time}$

$time = \frac{650}{65}$

$time = 10 \: hour.$