Answer :
2/5 × 60 mins in 1 hr = 24 minutes per tour
10 tours x 24 mins = 240 minutes
240 minutes/60 minutes in 1 hr = 4 hrs she spends giving tours each week
10 tours x 24 mins = 240 minutes
240 minutes/60 minutes in 1 hr = 4 hrs she spends giving tours each week