90 180 270 360 450 540 630 720 810 900 1080
90, 180, 270, 360, 450, 540, 630, 720, 810, 900, 990, 1080, . . .
(6 * 30) + (15 * 42) = 180 + 630 = 810.
630/30 = 21/1 = 21
First of all, percent means in "one hundred". So 30% is the same as 30/100, which we can reduce to 3/10 or 0.3. To figure out what 30% of 810 is, you simply multiply:3/10 x 810 = 2430/10And then divide:2430 / 10 = 243
810/900 = 0.9
90, 180, 270, 360, 450, 540, 630, 720, 810, 900.
90 180 270 360 450 540 630 720 810 900 1080
90, 180, 270, 360, 450, 540, 630, 720, 810, 900, 990, 1080, . . .
(6 * 30) + (15 * 42) = 180 + 630 = 810.
90, 180, 270, 360, 450, 540, 630, 720, 810, 900, 990, 1080, ..
90, 180, 270, 360, 450, 540, 630, 720, 810, 900 +90 . . .
90, 180, 270, 360, 450, 540, 630, 720, 810, 900
1 it is 90 180 270 360 450 540 630 720 810 900
90, 180, 270, 360, 450, 540, 630, 720, 810, 900
90, 180, 270, 360, 450, 540, 630, 720, 810, 900.
171/630 = (19×9)/(70×9) = 19/70