exam Maths Puzzle Numerical Ability

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log9(x-7)+log9(x-7)=1

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exam Other Question

1) Suppose wheat and sugar are two basic ingedients necessary to bake two items: a loaf of bread and a muffin. A baker has 25 pounds of wheat and 5 pounds of sugar. To bake each l find the point of intersection for the lines below using the substitution
3x+2y=4
y=1-2x