1km=1000m = 100000cm
86000cm= 0.86km
Answer:
A $14 scarf is marked, "20% off, would have price: 14 x (100 - 20)/100 = 11.2$
Hope this helps!
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Let n represent the number.
.. (n -9)^2 = n -3 . . . . . the square of 9 less than the number is 3 less than the number
.. n^2 -18n +81 = n -3
.. n^2 -19n +84 = 0
.. (n -7)(n -12) = 0
.. n = 7 or 12
The number could be 7 or 12.
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Check:
.. (7 -9)^2 = (-2)^2 = 4 = 7 -3 . . . . answer checks OK
.. (12 -9)^2 = 3^2 = 9 = 12 -3 . . . . answer checks OK
3/11. This can also be 6/22.
Let's assume the rebate is applied only to the 1280 and not the tax, so John pays a net 2% additional, tax less rebate.
1.02 × 1280 = 1305.06
Answer: 1305.06