SAT Question fea831fc: Ratios Rates Proportional Relationships And Units answer and explanation with Desmos solution

The average speed is the total distance divided by the total time. The total distance is $11$ miles and the total time is $26$ minutes. Thus, the average speed is $\frac{11}{26}$ miles per minute. The question asks for the average speed in miles per hour, and there are $60$ minutes in an hour; converting miles per minute to miles per hour gives the following:

$\text{Average speed}=\frac{11}{26}\times \frac{60}{1}$

$=\frac{660}{26}$ miles per hour

$\approx 25.38$ miles per hour

Therefore, to the nearest tenth of a mile per hour, the average speed of Paul Revere's ride would have been $25.4$ miles per hour. Note that 127/5, 25.4, and 25.40 are examples of ways to enter a correct answer.