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Step-by-step explanation:I think there is a mistake in the problem description. f and p are for the price of 1 yards fencing and 1 post.and not the amounts. because the problem description gives us the amounts already (30+8 yards fencing and 4 posts).based on the 8 more yards of fencing for $256 we know that 1 yard of fencing costs $32.we know from the beginning30f + 4p = 1040and again8f = 256f = $32now using that in the first equation30×32 + 4p = 1040960 + 4p = 10404p = 80p = $20he bought first 30 and then additional 8 yards of fencing for $32 per yard, and 4 posts for $20 per post.altogether he had to pay 1040+256 = $1296
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