You are 50 m from a pedestrian crossing
when an elderly person starts to cross.
If you are travelling at 60km/h, will you stop in time? What if the road is wet?

Step-by-step explanation:

if your vehicle travels 20 metres in braking to a stop from 50 km/h, at 100 km/h it will take approximately 80 metres to come to a stop on the same road surface (i.e. 4 x 20 metres).

the saving company have is: 24  *$1.25 = 30

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  Please have a look at the attached photo.

My

We need to caculate the surface areas of

Box 1 = 2lw+2lh+2hw = 2*20*4 + 2*20*6 + 2*6*4 = 448

Box 2 = 2lw+2lh+2hw = 2*15*8 + 2*15*4 + 2*4*8 = 424

So the differences in surface areas of the two boxes is:

448  - 424

= 24  

So the saving company have is: 24  *$1.25 = 30

Hope it will find you well.