Question

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60km/h for the next 15 minute the total distance covered by the car is???​

Answer 1

here u need to calculate to distance by using formula..

hope it helps u

Answer 2

◈ Given ◈

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60km/h for the next 15 minute.

◈ To find ◈

• Total distance covered by car

◈ Solution ◈

$\\\qquad\quad{\underline{\bf{\red{First\: condition}}}}$

A car moves with a speed of 40 km/h for 15 minutes

$\\\bullet\:\sf Speed\:of \: a \: car = 40km/h$

$\bullet\:\sf Time = 15 min$

Note :

• 1 hour = 60 min
• Time = 15/60 = 1/4 hour

$\\\qquad\quad{\blue{\boxed{\sf{\blue{Speed=\dfrac{Distance}{Time}}}}}}$

$\implies\sf Distance=Speed\times time$

$\implies\sf D_1 = 40 \times \dfrac{1}{4}$

$\implies\sf D_1 = 10km$

$\therefore{\underline{\boxed{\tt{Distance\:travelled\: i.e \: \bf 10km}}}}$

$\:$____________________________________________

$\\\qquad\quad{\underline{\bf{\red{Second\: condition}}}}$

A car moves with a speed of 60km/h for the next 15 minute.

$\\\bullet\:\sf Speed\:of \: a \: car = 60km/h$

$\bullet\:\sf Time = 15 min$

Convert min into hour

$\implies\sf Distance=Speed\times time$

$\implies\sf D_2 = 60 \times \dfrac{1}{4}$

$\implies\sf D_2 = 15km$

$\therefore{\underline{\boxed{\tt{Distance\:travelled\: i.e \: \bf 15km}}}}$

$\:$____________________________________________

${\large\ast}\:{\underline{\bf{\purple{Total\:distance\: travelled}}}}\:{\large\ast}$

$\implies\sf D_1 + D_2$

$\implies\sf 10 + 15$

$\implies\sf 25km$

$\therefore{\underline{\boxed{\tt{Total \: distance\:travelled\: by \: a\: car =\bf 25km}}}}$

$\:$____________________________________________