exam Maths Puzzle Numerical Ability

What is the maximum number of whole bricks in a wall 25 inches wide and 7 inches high if each brick is 8 inches wide by 2 inches high and there is 1/2 inch of mortar between each brick?

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exam Other Question

Can you provide me some assistance on this problem...instructions...if the sales tax is 2.5% and the tax on purchase is $5, what was the amount of the purchase? find the slope and the intercepts of each line.

f(x) = 4/5x + 7...............4/5 is 4 over 5.