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?

If the ratio of miles is
.. mr : mrs = 3 : 1
The total number of "ratio units" is 3+1 = 4, so each one stands for 3200/4 = 800 miles.

Mr Storey drove 3*800 = 2400 miles
Mrs Storey drove 1*800 = 800 miles