exam Maths Puzzle Numerical Ability

how do i solve this please explaon!!!!!!! i have a test on tuesday and its already saturday and i dont know how to do it

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exam Other Question

A nut mixture consists of almonds and cashews. Almonds are $4.98 per pound, and cashews are $6.98 per pound. How many pounds of each type of nut should be mixed to produce a 16 pounds selling for $5.73 per pound. i have to use the midpoint formula and i have the midpoint and one end and i have to find the other end

ex) A------B------C
(2,-3) (-5,1) (?)