Question

The distance between two towns is 380 kilometers. At the same moment, a passenger car and a truck start moving towards each other from different towns. They meet 4 hours later. If the car drives 5 kilometers than the truck, how fast is the truck?

Answer 1

Step-by-step explanation:

Distance = 380km

Time=4hrs

Speed=Distance

Time

=380

4

=90km/h

Therefore speed of the truck=90km/h

Now the car speed is more 5km/h than the truck speed.

Therefore, the speed of the car is =90+5=95km/h

Hope it helps you

Answer 2

The distance equals speed multiplied by time

• S = Vt

Car :-

• V = (x + 5) km/hr
• t = 4 hr
• S = 4(x + 5) km

Truck :-

• V = X km/hr
• t = 4 hr
• S = 4x km

$\rightarrow\:$ 4(x + 5) + 4x = 380

$\rightarrow$ 4x + 4x = 380 - 20

$\rightarrow$ 8x = 360

$\rightarrow$ x = $\frac{360}{8}$

$\rightarrow\:$ x = 45

$\huge\therefore\:$ The truck's speed is 45 km/hr & the car's speed is 50 km/hr

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