6/7 of 1 3/4......turn the mixed number to an improper fraction...and " of " means multiply 6/7 * 7/4 = 42/28 = 1 1/2...so a compact car weighs 1 1/2 tons or 1.5 tons
To find the median you cross off the first few numbers and the last few until you get to the middle then when you get the middle number that will be your median