jamesvardyboy
contestada

Stossel is listening to an audiobook that at normal speed will last 10 hours. Stossel decides listen the audiobook at 2.5 faster. How long will the book be?

Respuesta :

mhanifa

Answer:

  • 4 hours

Step-by-step explanation:

Speed and time are inverse functions.

At normal speed the time is 10 hours.

If the speed is 2.5 times faster, then time is 2.5 times less:

  • 10 hours / 2.5 = 4 hours

Speed is 2.5

Distance is 10

Time

  • 10/2.5
  • 10/(25/10)
  • 100/25
  • 4hrs