Question

Sahiba and Ritika are friends. Both of them
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decided to go a picnic by their own cars. Sahiba's
car travels at a speed of x km/hr, while Ritika's
car travels at a speed of 10 km/hr more than
Sahiba's car. Sahiba's car took 4 hours more than
Ritika's car to cover a distance of 240 km
Based on the above information, answer the
following questions:
(i) Which of the following quadratic equation best describes the speed of Sahiba's car
(a) x2 + 5x + 600 = 0
(b) x2 + 10x + 200 = 0
(c) x2 + 10x - 600 = 0
(d) x2 - 5x - 200 = 0
(ü) What is the speed of Ritika's car?
(a) 30 km/hr
(6) 60 km/hr
(c) 80 km/hr (d) 100 km/hr
(ii) What is the speed of Sahiba's car?
(a) 40 km/hr
(6) 80 km/hr
(c) 20 km/hr (d) 70 km/hr
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(b) 8 hours
(iv) What is the time taken by Sahiba to cover the whole distance?
(a) 16 hours.
(0) If the time taken by Ritika to cover the whole distance is to be 6 hours, then we
increase should be made in the speed ?
(a) 10 km/hr
Due to the coronavirus pandemir
16
(e) 10 hours
12 hours
(6) 20 km/hr
(c) 5 km/h​

Answer 1

Step-by-step explanation:

40 kph * 2 hr = 80 km

60 kph * 3 hr = 180 km

2 hr + 3 hr = 5 hr

80 km + 180 km = 260 km

avg vel = 260 km / 5 hr

avg vel = 52 kph

Answer 2

Answer:

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