Question

Raj and Ajay are very close friends. Both the families decide to go to Ranikhet by their own cars. Raj’s car travels at a speed of x km/h while Ajay’s car travels 5 km/h faster than Raj’s car. Raj took 4 hours more than Ajay to complete the journey of 400 km.

Which of the following quadratic equation describe the speed of Raj’s car?
a) x2–5x –500 = 0
b) x2+ 4x –400 = 0
c) x2+ 5x –500 = 0
(d) x2–4x + 400 = 0

Answer 1

Step-by-step explanation:

Raj and Ajay are very close friends. Both the families decide to go to Ranikhet by their own cars. Raj’s car travels at a speed of x km/h while Ajay’s car travels 5 km/h faster than Raj’s car. Raj took 4 hours more than Ajay to complete the journey of 400 km.

Which of the following quadratic equation describe the speed of Raj’s car?

a) x2–5x –500 = 0

b) x2+ 4x –400 = 0

c) x2+ 5x –500 = 0

(d) x2–4x + 400 = 0