Gerry determined that 1/2 inch of rain fell during 3/4 of an hour. What is the unit rate of rainfall in inches per hour?
3/4 of an hour is 45 minutes.
Set up a proportion. Crossmultiply and divide. 0.5(60) = 45x {crossmultiplied} 30 = 45x {multiplied 0.5 by 60} x = 30/45 {divided 30 by 45} x = 2/3 inch {reduced} 2/3 inch per hour is the unit rate Ask the House
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