How much more value does Christina’s investment generate than Alizeh’s investment in one year’s time? How much more value does Christina’s investment generate than Alizeh’s investment in 10 years’ time?

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same