Respuesta :
Answer:
7 hours, 30 minutes
Step-by-step explanation:
90 seconds times 300 = 27,000 seconds. Divided by 60 equals 450 minutes. Divided by 60 equals 7 hours, 30 minutes
Answer:
it will take 7 hours and 30 minutes to complete her invitations
Step-by-step explanation:
time taken for one envelope= 90 secs
time taken for 300 envelopes= 90*300= 27000 secs
Converting it into minutes = 27000/60= 450 minutes
Converting 450 minutes to hours = 450/60= 7.5 hours
