Question

a boy walking at a speed of 10 km per hour reaches his school 15 minutes late next time he increases his speed by 2 kilometre per hour but still he is late by 5 minutes find the distance of his school from his house
please please please please please please answer
it's urgent!!!!!!!!!!
please give me the working also​

Answer 1

Answer:

Let the distance of his school from the house be x

⇒ The difference in time =(15−5)min

=10min

=

60

10

hr

=

6

1

hr

⇒ Speed during next journey =10+2=12km/hr

According to the question,

⇒

10

x

−

12

x

=

6

1

⇒

5

x

−

6

x

=

3

1

⇒

30

6x−5x

=

3

1

⇒

30

x

=

3

1

⇒ x=

3

30

∴ x=10km

∴ The distance of boy school from house is 10km

Step-by-step explanation:

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Answer 2

$\bigstar\huge\bf\underline{\underline{Answer:-}}$

Let the distance of his school from the house be x

$\implies$ The difference in times = (15 - 5)min

10 min

10/60 hr

1/6 hr

$\implies$ Speed during next journey = 10 + 2

12 km/hr

According to the question

$\normalsize \frac{x}{10}-\frac{x}{12}=\frac{1}{6}$

$\normalsize \frac{x}{5}-\frac{x}{6}=\frac{1}{3}$

$\normalsize \frac{x}{30}=\frac{1}{3}$

$\normalsize x = \frac{30}{3}$

$\boxed{x = 10 km}$

Therefore, the distance of boy school form house is "10 cm"