Question

Jack bought an antique clock for $30. A year after he bought it the clock had increased in value by 20% and another year later the clock had increased in value by 15%. What is the clock worth two years after he bought it?

Answer 1

$\small \textbf{The cost of clock initially is}\: \: \$30.\\ \textbf{ A year after he bought it the clock had increased in value by }\: \: 20\% \\ \textbf{So, the cost of clock in next year is}\: \: 30\times 1.2= \$36\\ \textbf{another year later the clock had increased in value by }\: \: 15\%\\ \textbf{So, the cost of clock in next year is}\: \: 36\times 1.15= \$41.4\\$