02-06-2014
Mathematics

contestada

a map has a scale of 2 in : 25 mi. The map shows a highway is 31 inches long. how long is the actual highway?

Respuesta :

02-06-2014

2 inches / 25 miles = 31 inches / x

Cross-multiply the proportion:

2x inch-miles = 775 inch-miles

Divide each side by 2 inches:

x miles = 775/2 = 387.5 miles

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