Question 1201337
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An informal solution... if a formal algebraic solution like the one shown by the other tutor is not required....<br>
Look at the 3 prices pr pound on a number line and observe/calculate that 3.60 is (1.40)/(7.30) = 14/73 of the way from 2.20 to 9.50.<br>
That means 14/73 of the mixture is the higher-priced nuts.<br>
(14/73)(21.9) = 14*(21.9/73) = 14*0.3 = 4.2<br>
ANSWER: 4.2 pounds of the higher-priced nuts; the other 21.9-4.2 = 17.7 pounds of the lower-priced nuts<br>