exam Maths Puzzle Numerical Ability

If three-fourths of a pound of coffee costs $3.90, what does one pound cost?

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exam Other Question

a farmer plants two kinds of crops on his 3000 acres of land. the income from crop A is $190 per acre. the income from crop B is $300 per acre. the farmers gaol is to earn a sales of $713,000. Solve the system of equations. How do you test if something is a function on a graph? ......I remember my teacher saying something about using a pencil and lying it down on the graph, or something like that...please help!!!-I have a final TOMMMORROW!!!