A truck travelling at 70 km/hr uses 30% more diesel to travel a c
| A truck travelling at 70 km/hr uses 30% more diesel to travel a certain distance than it does when it travels at a speed 50 km/hr. If the truck can travel 19.5 km/L of diesel at 50 km/hr, how far can the truck travel on 10 L of diesel at a speed of 70 km/hr?
A. 130 km
B. 140 km
C. 150 km
D. 175 km
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
Explanation:
The vehicle travels 19.5 km/L at the rate of 50 km/hr.
It is given that the truck travelling at 70 km/hr uses 30% more diesel to travel.
Hence we can say that it will travel \(\frac{{19.5}}{{1.3}}km/L\) at the rate of 70 km/hr (i.e. equal to 15 km/L.)
Now,
The distance covered at 70 km/hr with 10 L = 10 × 15
∴ The distance covered at 70 km/hr with 10 L is 150 km.