Question

The graph shows the progress of a car in which traveled 300 km in 5 hours. Assuming that its speed remained constant, how far had the car gone after 2 hours?

A) 110 km
B) 120 km
C) 130 km
D) 140 km
*use the two points, (5,300) and (2,_)

Answer 1

The speed of the car remains constant that is to say that the speed in both cases are equal.

The speed of the car remains constant that is to say that the speed in both cases are equal.Then between these cases a proportion is established.

traveled
`\: \: \: \:` hours

`300\: km ----- 5 \: hours`

`x \:km ----- 2\: hours`

To solve using the rule of three we must first cross multiply and divide the result by the last number.

`x = (300*2)/(5) \\ \\ x =120km`

Los km en viaje por 2 horas es igual a 120 km