So, let's make these two values improper fractions so they're easier to work with. [tex] 4+\frac{1}{3}=\frac{12}{3}+\frac{1}{3}=\frac{13}{3}
3+\frac{1}{2}=\frac{6}{2}+\frac{1}{2}=\frac{7}{2} [/tex]
So, to get the rate he grew in those months we have:
[tex] \frac{\frac{13}{3} \text{inches}}{\frac{7}{2}\text{months}} =\frac{26\text{inches}}{21\text{months}} [/tex]
And to get the rate he grew in one month we have to divide both our numerator and our denominator by 21 to get:
[tex] \frac{\frac{26}{21} \text{inches}}{\text{month}}\approx \frac{1.24\text{inches}}{\text{month}} [/tex] aka he grew 1.24 inches in a month.
