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Mr. Investor deposited half of his money in the bank at 5% interest. He invested the other half in bonds with 7% interest. How much money did he invest when his annual profit was CZK 600?

Correct answer:

x =  5000 Kc

Step-by-step explanation:

q1=5%=1005=201=0.05 q2=7%=1007=0.07 z=600 Kc  x q1 + x q2  = z  x=q1+q2z=0.05+0.07600=5000 Kc

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