to find 65% of 1500, multiply 1500 by .65 (to convert percentages to decimals, just move a decimal point over two spaces).
you can check that this answer is right with logic. most of the students will be girls (more than 50%) and 975 makes up most of 1500.
someone else asked this same question a while ago, and you can find their explanation here
the answer would be 48 miles in 60 minutes. i hope that !
36 x 60 = 2160
45n = 2160
n = 48