Question

Satish takes 24 minutes to reach his school, traveling at 15km/h.at what speed he must go to reach his school in 18minutes

Answer 1

$v1 = 15km {h}^{ - 1} = \frac{15 \times 1000}{60 \times 60} = \frac{25}{6} m {sec}^{ - 1 } \\ t = 24 \times 60 sec \\ d = v1 \times t = \frac{25 \times 24 \times 60}{6} = 25 \times 240m \\ d = v2 \times 18 \times 60 \\ 25 \times 240 = v2 \times 18 \times 60 \\ v2 = \frac{25 \times 240}{18 \times 60} = \frac{50}{9} = 5.55 \: m {sec}^{ - 1}$

Answer 2

Step-by-step explanation:

answer is 20 km per hrs

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