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Two-commodities-X-and-Y-cost-70-00-and-80-00-per-kg-respectively-If-34-5-kg-of-X-is-mixed-with-26kg-of-Y-and-the-mixture-is-sold-at-85-00-per-kg-calculate-the-percentage-profit-




Question Number 33783 by pieroo last updated on 24/Apr/18
Two commodities X and Y cost $70.00 and $80.00  per kg respectively. If 34.5 kg of X is mixed with   26kg of Y and the mixture is sold at $85.00 per kg,  calculate the percentage profit.
$$\mathrm{Two}\:\mathrm{commodities}\:\mathrm{X}\:\mathrm{and}\:\mathrm{Y}\:\mathrm{cost}\:\$\mathrm{70}.\mathrm{00}\:\mathrm{and}\:\$\mathrm{80}.\mathrm{00} \\ $$$$\mathrm{per}\:\mathrm{kg}\:\mathrm{respectively}.\:\mathrm{If}\:\mathrm{34}.\mathrm{5}\:\mathrm{kg}\:\mathrm{of}\:\mathrm{X}\:\mathrm{is}\:\mathrm{mixed}\:\mathrm{with}\: \\ $$$$\mathrm{26kg}\:\mathrm{of}\:\mathrm{Y}\:\mathrm{and}\:\mathrm{the}\:\mathrm{mixture}\:\mathrm{is}\:\mathrm{sold}\:\mathrm{at}\:\$\mathrm{85}.\mathrm{00}\:\mathrm{per}\:\mathrm{kg}, \\ $$$$\mathrm{calculate}\:\mathrm{the}\:\mathrm{percentage}\:\mathrm{profit}. \\ $$
Answered by MJS last updated on 24/Apr/18
the cost of the mixture per kg is  ((70×34.5+80×26)/(34.5+26))≈74.30$  the profit is 100×(((85)/(74.30))−1)≈14.4%
$$\mathrm{the}\:\mathrm{cost}\:\mathrm{of}\:\mathrm{the}\:\mathrm{mixture}\:\mathrm{per}\:\mathrm{kg}\:\mathrm{is} \\ $$$$\frac{\mathrm{70}×\mathrm{34}.\mathrm{5}+\mathrm{80}×\mathrm{26}}{\mathrm{34}.\mathrm{5}+\mathrm{26}}\approx\mathrm{74}.\mathrm{30\$} \\ $$$$\mathrm{the}\:\mathrm{profit}\:\mathrm{is}\:\mathrm{100}×\left(\frac{\mathrm{85}}{\mathrm{74}.\mathrm{30}}−\mathrm{1}\right)\approx\mathrm{14}.\mathrm{4\%} \\ $$

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