Question

if it rains 12 1/4 inches of rain in 25 1/2 hours .What is the approximate rainfall rate in inches per hour

Answer 1

Let:

y = Amount of rain

x = Time

The rainfall rate is given by:

$rain_{}fall_{\text{ }}rate=\frac{Amount_{\text{ }}of_{\text{ }}rain}{Time}$

Let's convert the mixed numbers into fractions:

$12\frac{1}{4}=\frac{12\cdot4+1}{4}=\frac{48+1}{4}=\frac{49}{4}=12.25$$25\frac{1}{2}=\frac{25\cdot2+1}{2}=\frac{50+1}{2}=\frac{51}{2}=25.5$

Therefore:

$rain_{}fall_{\text{ }}rate=\frac{12.25}{25.5}\approx0.48$