Some of the questions are like..
#26 What percent of 80 is 640?
#29 18 is 66 & 2/3 of what number?
#31 320 is 8000% of what number?
She taught it, but i didn't really understand it, I asked for help, I guess she tried her best to help me, but I really didn't understand it. So I asked one of my friends around me for help, and all they did was right down the answer for me! THATS NOT HELP! I want to learn how to do it myself
so could you help me solve these, and show me how you got them?
THANKS!!
2007-12-06 11:52:21 · 3 answers · asked by Abby,,[[RAWR]] 2 in Science & Mathematics ➔ Mathematics
translate English into Mathish.
What--x (variable)
percent-- /100
of-- x (multiplication)
is-- =
2007-12-06 12:12:50 · answer #1 · answered by Goddess of Grammar 7 · 0⤊ 0⤋
1. 640 / 80 * 100% = 8 * 100 = 8--%, therefore 640 is 800% of 80.
2. 66 2/3 of x = 18; 200 / 3 * x = 18
x = 18 * 3/200 = 0.27
3. 8000% of x = 320
8000/100 * x = 320
80 * x = 320
x = 40
2007-12-06 12:01:16 · answer #2 · answered by Anonymous · 0⤊ 0⤋
just remember "is over of" when you are doing percents in proportions.
2007-12-06 12:01:01 · answer #3 · answered by A7X Fan (RIP The Rev) 5 · 0⤊ 0⤋