Mr. and mrs. storey drove 3,200 miles in all during their vacation. mr storey drove 3 times as many miles as mrs. storey. howany miles did mr. storey drive? how many miles did mrs. storey drive?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?