Marisa earned 560 in the summer. she earned $40 each part of the summer and $60 each week for the rest. If she earned $40 each week twice as often as she earned $60,how many weeks did she earn $40?

Marisa earned 560 in the summer she earned 40 each part of the summer and 60 each week for the rest If she earned 40 each week twice as often as she earned 60ho class=