Question
Calculate the value of x if x% of 400 plus {800 ÷ x of 8}
× 4 is equal to 88Solution
ATQ,
x% of 400 + {800 ÷ x of 8} × 4 = 88
Or, 4x + 320/x = 88
Or, x² – 22x + 80 = 0
Or, x² – 10x – 12x + 80 = 0
Or, x(x – 10) – 12(x – 10) = 0
Or, (x – 12)(x – 10) = 0
Or, x = 10 or x = 12
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