Question 1 Stonewall receives $250 per year in simple interest from an amount of money he invested in
ADB, Barclays and GCB Suppose ADB pays an interest of 2%, Barclays pays an interest of
4% and GCB pays an interest of 5% per annum and an amount of €350 more was invested in
Barclays than the amount invested in ADB and GCB combined. Also, the amount invested in
Barclays is 2 times the amount invested in (ICB.
a) Write down the three linear equations and represent them in the matrix form AX B.
b) Find the amount of money Stonewall invested in ADB, Barclays and GCB using Matrix Inversion