Jackie and her two younger sisters are making cookies. each of her sisters makes 75% of the number of cookies Jackie makes. When they combine their cookies into one jar, what percent of the total cookies were made by Jackie?
Jackie makes =J cookies
Her sisters =2*0.75J
J + 2*0.75J =2.5J - Total number of cookies made.
Jackie's percentage =J / 2.5J =1/2.5 = 40 % - Jackies's share
