There are 1500 students in a school. 65% are girls. how many girls are there in the school?
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
answer: 36 cm
in the similar triangles the corresponding sides are in the same proportion,