SOLUTION: A jumbo chocolate bar with a rectangular shape measures 12 cm in length, 7 cm in width, and 3 cm in thickness. Due to escalating costs of cocoa, management decides to reduce the vo

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Question 1126575: A jumbo chocolate bar with a rectangular shape measures 12 cm in length, 7 cm in width, and 3 cm in thickness. Due to escalating costs of cocoa, management decides to reduce the volume of the bar by 10%. To accomplish this reduction, management decides the new bar should have the same 3 cm thickness, but the length and width each should be reduced an equal number of cm. What should be the dimensions of the new candy bar?
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
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(12-x)*(7-x) = 0.9*12*7.


Solve for  x  this quadratic equation.


Then evaluate  12-x  and  7-x.