book Maths Puzzle Numerical Ability

the equation 14y-y(squared)=0 has two solutions. whats the other?

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book Other Question

Seperate $89 into two parts so that the second part is $4 less thean twice the first part? How many pounds of candy selling for $5.80 per pound should be mixed with 7 pounds of candy selling for $2.40 per pound to obtain a mixture selling for $3.42 per pound?