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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
5
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Clue
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%
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
20 TIMES. THEY ARE 9, 19, 29, 39, 49, 59, 69, 79, 89, 99 (2 TIMES) FOLLOWED BY 90, 91, 92, 93, 94, 95, 96, 97, 98
THREE MEN. THE THREE MEN CHOP DOWN THREE TREES IN THREE HOURS. THE SAME THREE MEN CHOP DOWN THREE MORE TREES IN ANOTHER THREE HOURS. THIS GIVES A TOTAL OF SIX TREES IN SIX HOURS WITH THREE MEN
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