1.) The numbers of gallons g of fuel used on a trip varies directly with the number of miles m traveled. If a trip of 270 miles required 12 gallons of fuel, how many gallons are required for a trip of 400 miles?
2.)Karen earns $28.50 for working 6 hours . If the amount m she can earns varies directly with h the number of hours she works, how much will she earn for working 10 hours?