exam Maths Puzzle Numerical Ability

Find the square of (w - 1/4)^2

Thanks for the help you can provide so I can understand this problem.

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exam Other Question

In a town election, the winning candidate had 220more votes than the loser. If 810 votes were cast in all, how many votes did each candidate receive?

this is what I got so far...Am I on the right track? if so, what do I do next

220*x+y=810 3 is 0.2 percent of what number?