Question #afe0f

1 Answer
Apr 14, 2017

2.42.4 lbs

Explanation:

Initial weight of mixture = 1212 lbs
Since 10%10% of this is banana chips; weight of banana chips in mixture = (10*12)/100 = 1.21012100=1.2 lbs

Let the weight of additional banana chips added be color(red)xx lbs.

Now the total weight of mixture becomes 12+x12+x lbs, and
the total weight of banana chips becomes 1.2+x1.2+x lbs.

But now the banana chips account for 25%25% of the mixture.

therefore (1.2+x)/(12+x)*100 = 25

=> (1.2+x)*100 = (12+x)*25
=> 120+100x = 300+25x
=> 75x = 180
implies x=180/75 = color(red)2.4

Hence they should add 2.4 lbs of banana chips to bring mixture up to 25%.