book Maths Puzzle Numerical Ability

pencils at the school bookstore cost 8 cents each. stacy buys 3 pencils and her brother buys 4 pencils. wat is the total cozt of the pencils

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A total of 10 pounds of apples and grapes costs $12.30. The apples cost $1.29 per pound and the grapes costs $1.19 per pound. How many pounds of apples are there? problem 84 need help... done wrong :(
I thought it was x < 5 but I was wrong..


2 times a numbed, increaded by 28, is less than or equal to 6 times that number.

x is negative