Problema Solution
A wholesaler has 100 kg of mixed nuts that sell for $4.00/kg. In order to make the price more attractive, she plans to mix in some cheaper nuts worth $3.20/kg. If the wholesaler wants to sell the mixture for $3.40/kg, how many kilograms of the cheaper nuts should be used?
Answer provided by our tutors
let he mixed X kg.
then total = 100+x kg.
so, Total price= 100 *4 + x*3.2
so, 3.4(100+x)= 400 +3.2x
340 +3.4x = 400 +3.2x
0.2x= 60
x= 120 kg
so, he mixed 120kg of the cheaper nuts.