<span>188 miles per gallon</span>
1.875 because ⅜ or 5 is 1.87 or 1.9 if you round it.
To estimate this I find it easy to turn the fractions into decimals and then you can easily estimate. To turn a fraction into a decimal divide the numerator by the denominator.
To find the median of 20 values, list the values from smallest to largest then add the 10th and 11th number then divide by 2 and you get your median.