Question

A school's lessons begin at 9:00am and end at 3:40pm with an hour's break at lunchtime and 20 minutes break mid-morning. If there are 8 lessons of equal length, how long is a lesson?

Answer 1

Respuesta:

40 minutes

Explicación paso a paso:

from 9:00 a.m. to 3:40 p.m.

(de las 9 am hasta las 3:40)

there are 6 hours and 40 minutes

(hay 6 horas y 40 minutos de diferencia)

6.40 - 1 hour of lunchtime and 20 minutes break midmornig

( 6 horas y 40 minutos le restamos una hora de almuerzo y 20 minutos de medio dia)

6.40 -1.20 =5 hour and 20 minutes  

5 hour and 20 minutes = 320 minutes

(convertimos 5 horas en minutos y le sumamos sus 20 minutos)

320/8 = 40 minutes

each lesson lasts 40 minutes

(cada leccion dura 40 minutos)