book Maths Puzzle Numerical Ability

1x-2y-2z+2w+-24
0x-1y-2z-1w=-12

find X:
Y:
W:
Z:

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book Other Question

A banker invested $24,000 for a client in two mutual funds, one earning 9% annuaul interest and the other earning 14%. After on year, the total interest earned was $3135. How much Using the Distributive property what would .... 2(4+t) be?