Question

Shabnam takes 20 min to reach her school if she goes at a speed of 6 km/hr.if she wants to reach in 24 min what should be her speed in km/hr

Answer 1

Time(1) = 20 mins
Speed = 6km/hr × 5/18 = 5m/3s
Speed = Distance/Time
Distance= Speed × Time
Distance= 5m/3s × 20 = 100m/3
Time(2) = 24 mins
Speed = Distance/Time
Speed = 100m/3 × 1/24
Speed = 25m/18s × 18/5 = 5km/hr
I hope I solved your problem mark me as brainly.

Answer 2

Answer-

If she wants to reach in 24 min, her speed should be 5 km/hr

Solution-

Shabnam takes 20 min or  $\frac{1}{3}$  hour to reach her school, at a speed of 6 km/hr

We know that,

$Speed=\frac{Distance}{Time}$

$Distance=Speed\times Time$

Putting the values,

$Distance=6\times \frac{1}{3}$

$\Rightarrow Distance=2\ km$

So the distance between her home and school is 2 km.

She wants to reach in 24 min or  $\frac{24}{60}$  hour, so the her speed should be,

$Speed=\frac{Distance}{Time}$

$=\frac{2}{\frac{24}{60}}$

$=\frac{2\times 60}{24}}$

$=5\ km/hr$