Question #e37ed

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Question #e37ed

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Answer 1 · 2015-07-25T14:09:45

I found:
Andre#=R146#
Bob#=R106#

Explanation:

Call:
#x# money of Andre;
#y# money of Bob;
You can build a system of two equations "translating" into maths your statements:

#x-20=y+20#
#x+22=2(y-22)#

Rearranging:
#{x-y=40#
#{x-2y=-66#
from the first one you have: #x=40+y# substitute for #x# into the second:
#40+y-2y=-66#
so: #y=106# substitute back to find #x#:
#x=40+106=146#

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Question #e37ed

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