Nancy dumped 4 lbs of a bag of apples with 31 % red apples, into a bag of 10 lbs which contained 42% red apples. What is the new percent of red apples?

Answer 1

.31(4) + .42(10) = 1.24 + 4.2 = 5.44 pounds red apples

5.44/(4+10) = 5.44/14 =about 0.3886 = about 38.86% red apples

= about 39% red apples

39-31 = 8

42-39= 3

Nancy has about 8/3 times as much 42% as 31%

10/4 = 2.5= roughly 8/3= 2.67