Question

a car moves with a speed of 30 km/ h for 10 minutes and then 50 km/ h for 20 minister.What will be the total distance covered by the car after 30 minutes​

Answer 1

Answer:

s = d/t

Explanation:

use this formulae and change the minister

Answer 2

Explanation:

given,

v1=30km/hr ,t1=10 min

v2=50km/hr ,t2=20 min

to find,

distance after 30 min

d=d1+d2

sol.

v1=30km/60min

=1km/2hr

now

v1=d1/t1

1/2=d1/10

d1=5km(in 10 min)

v2=50km/60hr

=5km/6hr

v2=d2/t2

5/6=d2/20

d2=16.66km

now

d=d1+d2

d=5+16.66

• d=21.66km