Question: I need help on this practice exam question please. I got the concept but cannot understand how to solve it. Thank you I got the

I need help on this practice exam question please. I got the concept but cannot understand how to solve it. Thank you

I got the concept but cannot understand how to solve it.

(3) Suppose an economy has a housing industry and a food indus- try. Let $1 in housing require 40 cents in housing and 70 cents in food, while $1 in food uses 20 cents in housing and 60 cents food. in food. Let the external demand be $20 in housing and $10 in (a) Determine the consumption matrix C and and the demand matrix D. (b) Determine which industries, if any, are profitable. (c) Find (1 - C)-1. (d) Find the production vector, X, for the given external de- mand

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