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A-tv-set-was-marked-for-sale-at-760-00-cedis-in-order-to-make-a-profit-of-20-The-tv-was-actually-sold-at-a-discount-of-5-Calculate-to-2-s-f-the-actual-percentage-profit-




Question Number 56694 by otchereabdullai@gmail.com last updated on 21/Mar/19
A tv set was marked for sale at 760.00  cedis in order to make a profit of 20%.  The tv was actually sold at a discount   of 5%. Calculate to 2 s.f the actual   percentage profit
$$\mathrm{A}\:\mathrm{tv}\:\mathrm{set}\:\mathrm{was}\:\mathrm{marked}\:\mathrm{for}\:\mathrm{sale}\:\mathrm{at}\:\mathrm{760}.\mathrm{00} \\ $$$$\mathrm{cedis}\:\mathrm{in}\:\mathrm{order}\:\mathrm{to}\:\mathrm{make}\:\mathrm{a}\:\mathrm{profit}\:\mathrm{of}\:\mathrm{20\%}. \\ $$$$\mathrm{The}\:\mathrm{tv}\:\mathrm{was}\:\mathrm{actually}\:\mathrm{sold}\:\mathrm{at}\:\mathrm{a}\:\mathrm{discount}\: \\ $$$$\mathrm{of}\:\mathrm{5\%}.\:\mathrm{Calculate}\:\mathrm{to}\:\mathrm{2}\:\mathrm{s}.\mathrm{f}\:\mathrm{the}\:\mathrm{actual}\: \\ $$$$\mathrm{percentage}\:\mathrm{profit} \\ $$
Answered by mr W last updated on 22/Mar/19
let C=cost of tv set  760=1.20C  ⇒C=((760)/(1.20))  ((0.95×760)/((760)/(1.20)))=0.95×1.20=1.14  i.e. when the tv set is sold at a discount  of  5%, the profit percentage is 14%.
$${let}\:{C}={cost}\:{of}\:{tv}\:{set} \\ $$$$\mathrm{760}=\mathrm{1}.\mathrm{20}{C} \\ $$$$\Rightarrow{C}=\frac{\mathrm{760}}{\mathrm{1}.\mathrm{20}} \\ $$$$\frac{\mathrm{0}.\mathrm{95}×\mathrm{760}}{\frac{\mathrm{760}}{\mathrm{1}.\mathrm{20}}}=\mathrm{0}.\mathrm{95}×\mathrm{1}.\mathrm{20}=\mathrm{1}.\mathrm{14} \\ $$$${i}.{e}.\:{when}\:{the}\:{tv}\:{set}\:{is}\:{sold}\:{at}\:{a}\:{discount} \\ $$$${of}\:\:\mathrm{5\%},\:{the}\:{profit}\:{percentage}\:{is}\:\mathrm{14\%}. \\ $$
Commented by otchereabdullai@gmail.com last updated on 22/Mar/19
Thank you prof W
$$\mathrm{Thank}\:\mathrm{you}\:\mathrm{prof}\:\mathrm{W} \\ $$

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