Question

Pls answer fasst with EXPLANATION i will surely mark as brainliast and thanks.​

Answer 1

CASE - 1

• Distance, s = 200 km
• Time, t = 4 hours
• Speed, v = ?

We know,

$\sf{\bigstar\ Distance=Speed \times Time}$

Putting the values :-

$\sf{\dashrightarrow 200=v \times 4}\\\\\sf{\dashrightarrow v=\dfrac{200}{4} }\\\\\sf{\dashrightarrow v=50\ km/h}$

$\rule{140}2$

CASE - 2

• Speed, V = 2v = 2 × 50 = 100 km/h
• Distance, S = 150 km
• Time, T = ?

Again, substituting the values :-

$\sf{\dashrightarrow 150=100 \times T}\\\\\sf{\dashrightarrow T=\dfrac{150}{100} }\\\\\sf{\dashrightarrow T=1.5\ hours}$

∴ The answer is C) One and half hours.

Answer 2

Answer:

CASE - 1

Distance, s = 200 km

Time, t = 4 hours

Speed, v = ?

We know,

\sf{\bigstar\ Distance=Speed \times Time}★ Distance=Speed×Time

Putting the values :-

\begin{gathered}\sf{\dashrightarrow 200=v \times 4}\\\\\sf{\dashrightarrow v=\dfrac{200}{4} }\\\\\sf{\dashrightarrow v=50\ km/h}\end{gathered}

⇢200=v×4

⇢v=

4

200

⇢v=50 km/h

\rule{140}2

CASE - 2

Speed, V = 2v = 2 × 50 = 100 km/h

Distance, S = 150 km

Time, T = ?

Again, substituting the values :-

\begin{gathered}\sf{\dashrightarrow 150=100 \times T}\\\\\sf{\dashrightarrow T=\dfrac{150}{100} }\\\\\sf{\dashrightarrow T=1.5\ hours}\end{gathered}

⇢150=100×T

⇢T=

100

150

⇢T=1.5 hours

∴ The answer is C) One and half hours