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0 / 60 seg.
If the price off a dress was cut by 20% for a sale, by what percentage off the sale price must it be increased by to resell it at the original price?
2
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Clue
12 CHESTNUT TREES. THERE ARE 6 CHESTNUT TREES ON EACH SIDE. THE TREES ARE POSITIONED 0 YARDS, 6 YARDS, 12 YARDS, 18 YARDS, 24 YARDS AND 30 YARDS FROM THE START OF THE STREET
62.5 GRAMS THE SMALLER BRICK IS NOT ONLY FOUR TIMES SHORTER THAN THE FIRST ONE, BUT IT IS ALSO FOUR TIMES NARROWER AND FOUR TIMES LOWER AND THEREFORE THE RATIO OF THE VOLUME AND WEIGHT IS 4 X 4 X 4 = 64 TIMES. SO 4KG/64 = 62.5 GRAMS
25%. IF THE ORIGINAL PRICE OF THE DRESS WAS $100 AND AFTER 20% DROP IT WILL BE $80. TO RESELL AT THE ORIGINAL PRICE, THE PRICE HAS TO BE INCREASED BY: 20⁄80 X 100 = 25%
BECAUSE THERE ARE TWO SIDES TO THE COIN, THE CHANCES ARE ALWAYS ONE IN TWO
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