beau can process 36 envelopes for a mailing in 24 minutes. At this rate, how many minutes will it take him to process 120 envelope?

Respuesta :

36 envelopes / 24 minutes

36/24 = 3/2
3 envelopes per 2 minutes

120 / 3 =40 * 3 envelopes per 2 minutes

40 * 2 = 80

It will take 80min