40 of 20 = 40 x 20 = 800 40% of 20 = 0.4 x 20 = 8
100 X 20 2000
20 x---- = -----100 1000Cross multiply so100 * X = 20 *1000or100x = 20,000Divide by 100 on both sides to isolate the variable [x]100x = 20,000 x = 200------- ---------100 100So 20% of 1000 is 200.
25 x 20 = 500 !
20 cubed cubed = [203]3 = (20 x 20 x 20)3 This equals 20 x 20 x 20 x 20 x 20 x 20 x 20 x 20 x 20 which = (20)9 The rule to work it out is:multiply the two exponents ie 3 x 3 = 9 206 is 20 x 20 x 20 x 20 x 20 x 20 which is obviously less than 209. See: http://oakroadsystems.com/math/expolaws.htm#WhatsNew#WhatsNew
13.50 x 20 = 270
40 of 20 = 40 x 20 = 800 40% of 20 = 0.4 x 20 = 8
100 X 20 2000
20
120
20 x .4 = 8
20% of 30 is 6 ; 20 percent = .20 30 x .20 = 6
one dollar 20 x $0.05 = $1.00
20 x 10 = 2.00 and 35 x 5 = 1.75 for a total of $3.75.
20 x---- = -----100 1000Cross multiply so100 * X = 20 *1000or100x = 20,000Divide by 100 on both sides to isolate the variable [x]100x = 20,000 x = 200------- ---------100 100So 20% of 1000 is 200.
20 40 60 80 101 x 20 = 202 x 20 = 403 x 20 = 604 x 20 = 805 x 20 = 1006 x 20 = 1207 x 20 = 1408 x 20 = 1609 x 20 = 18010 x 20 = 20011 x 20 = 22012 x 20 = 24013 x 20 = 26014 x 20 = 28015 x 20 = 30016 x 20 = 32017 x 20 = 34018 x 20 = 36019 x 20 = 38020 x 20 = 400
20" = 1.666666667' 1.666666667 X 1.666666667 X 15 = 41.66666667^3 41.66666667^3 X 125lbs = 5,208.333334 lbs I an assuming that the 20 is in inchs and not feet. If the 20 is feet, than it would be 20 X 20 x 15 x 125.