=+Qantas has just announced a revised payment schedule for all travel agents. It will now pay travel agents a 10% commission per package up to a maximum of $50. Any package costing more than $500 generates only a $50 commission, regardless of the package price.

Required 1 Under the old 10% commission structure, how many round-trip packages must Adventure Travel sell each month:

(a) to break even and

(b) to earn a profit of $7000?