Problem

$7.$ If $c0st-DriCC$ of a calculator becomes $6.4$ times of
itself and selling price also increases by $450%$
then new profit percentage is 76%.find initial
profit $0%2$

10th-13th grade

Calculus

Solution

Qanda teacher - Askhina

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$7.$ If $cost-DricC$ $0ta$ calculator becomes $6.4$ times $0t$
itself and $sc1ling$ price also increases $b\right)$ $450%$
then new profit percentage $is$ 76%.find initial
profit %?

Probability and Statistics