Question #afe0f

1 Answer
Apr 14, 2017

Answer:

#2.4# lbs

Explanation:

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

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

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

But now the banana chips account for #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%#.