The problem can be represented by two equations:
The average of the two speeds are 260 km/hr. -> 1/2(X + Y) = 260
Twice Malcom's speeds is 80 more than Ravi's speed -> 2X - Y = 80
where X = Malcom's maximum speed, Y = Ravi's maximum speed.
This is two equations in two unknowns:
1)X + Y = 520
2)2X - Y = 80
add equations 1 and 2
3X = 600
X = 200,
Plug X back into equation 1.
200 + Y = 520 -> Y = 320.
Malcom's maximum speed is 200 km/hr.
Ravi's maximum speed is 320 km/hr.
