It is 50 and 20 = 70.
55 x 20 = 1100
65 + 65 + 65 + 90 + 90 + 90 + 90 + 50 + 50 + 50 + 50 + 50 + 50 + 20 + 20 + 20 + 20 + 20 + 20 + 20 = 995
20 + 50 = 70.
20 + 50 + 20 + 10 = 50 = 150
50% of 20 = 50% * 20 = 0.5 * 20 = 10
20% of 50= 20% * 50= 0.2 * 50= 10
you minus the two sets of # first then find out what "a" is always the # after the = minus the # before "a" 30 + a = 50 a = 50 - 30 a = 20 30-30=50-30 (50-30=20) 0+a=20 a=20 if a = 20 30+a=50 30+20=50 50=50 therefore a=20
50 percent of (100/20) = 50 percent of 5 = 2.5 (50 percent of 100) / 20 = (50 / 20) = 2.5 as well
10 is 20% of 50 therefore 20% off 50 = 40
1000
20 bis 50