Convert your fractions to a decimal (1) One 5th = .20% 4/5th = .80 0r 80 % of an acre. She wants to sell 2/3rd, one third is 33.3, two third is 66.6, 2/3rd of 80 is 53.38 of an acre.80 x.666=53.38.
(2) One 5th = .20%,2 5th= 40% you need 40% of the 7/10, or 70% of the brownies. 70 times .40 =28 If the whole pan had 100 brownies Greg would buy 28 brownies.
