Question

Ravi starts for his school at 8:20 a.m. on his bicycle. If the travels at a speed of 10 km/h, then the reaches his school late by 8 minutes but on travelling at 16 km/.h he reaches the school 10 minutes early. At what time does to school starts? Pls give the answer step by step and use simple methods and not the answers copied from sites.

Answer 1

Answer:

ravi school starts at 8:18 am

Step-by-step explanation:

ravi can leave the home 8am

he start cycling and reach at school in 8 minutes

he reach 10 minutes early

then school starts time is

time required from 8 am = traveling and scool starting time

= 8+10

= 18 min

= 8: 18 am

Answer 2

$\large\color{black}{Step-by-Step \: Explanation:-}$

Let "t" minutes are required to reach school from home on time when Ravi starts at 8 : 20 a.m.

Distance= (t + 8) 10 = 16 (t - 10)

Distance = Time × Speed

10 t + 80 = 16 t - 160

6t = 80 + 160

$t = \frac{240}{6}$

t = 40

Hence, school starts from forty minutes after 8:20 a.m. i.e., from 9:00 a.m.

$\huge\dag\sf\red{By \: Divyanshu}$