Question

Rumi leaves her home at 1:30 pm and drives at 40kmph at 2:00 pm buzo starts from the same buzo catch up with rumi​

Answer 1

Answer:

4 pm at 50kmph speed

Explanation:

For Buzo to catch up with Rumi, his speed should be greater than Rumi ( this is not provided in question statement).

Taking Buzo’s speed at 50 kmph

Distance covered by Rumi 1:30 pm to 2 pm = ½ hr  x 40 km/hr

= 20 kms.

Now  relative speed of Rumi and Buzo would be;

=(50−40) = 10 km/hr

Required time by Buzo = 20 km10 km/hr

= 2 hours

Therefore Buzo travelling at 50km/h would catch up with Rumi at 4 pm

Answer 2

Buzo should travel at a speed of 50 km/h to catch up with Rumi at 4 pm.

Explanation:

The question is incomplete. Buzo's speed is not mentioned. He needs to be faster than Rumi to be able to catch up. So let's assume Buzo's speed is 50 kmph.

Distance covered by Rumi by 2 pm = 1/2 hr  x 40 km/hr

= 20 kms.

Relative speed of Rumi and Buzo would be;

= (50 - 40)

= 10 km/hr

Time required for Buzo to catch up = 20 km / 10 km/hr = 2 hr

So Buzo should travel at a speed of 50 km/h to catch up with Rumi at 4 pm.