A man invested \(\$150\) in the stock market. During the first week, he lost \(\$45\). During the second week, he tripled his money. How much does he have at the end of the second week?

\(\$315\)

Explanation

First, calculate how much he had at the end of the first week: \(\$150 –\$45 =\$105\). Since he tripled his money, it is then necessary to multiply this value by 3: \(\$105 \times 3 =  \$315\)

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