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Q.

A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?


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a

168 km

b

120 km

c

140 km

d

150 km 

answer is A.

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Detailed Solution

Given that a loaded truck travels 14 km in 25 minutes
By converting hours to minutes.
We have to find how much distance it will cover in 300 minutes.
As we know, the more the distance is covered by the truck, the more is the time taken by the truck. Hence, the problem is of direct proportion.
Let us suppose the truck travels x km in 300 minutes. So, our table looks like

Distance travelled

14

X

Time taken

25

300


Now, distance and time are in direct proportion, therefore
1425 = x300
14 × 300 = 25x
25x = 14 × 300
x = 14 ×30025   x = 168  Therefore, truck travels 168 km in 300 minutes or we can say,
Truck travels 168 km in 5 hours.
 
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