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06 Nov 2018, 08:13
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B
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Difficulty:
5%
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Question Stats:
93% (00:59) correct
7%
(01:22)
wrong
based on 1081
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Audrey went shopping with D dollars. She spent 20% of her money on a blouse and 25% of what was left on a pair of shoes. What per cent of the original D dollars did she spend?
(A) 25%
(B) 40%
(C) 45%
(D) 47%
(E) 50%
(A) 25%
(B) 40%
(C) 45%
(D) 47%
(E) 50%
06 Nov 2018, 08:38
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Quote:
Audrey went shopping with D dollars. She spent 20% of her money on a blouse and 25% of what was left on a pair of shoes. What per cent of the original D dollars did she spend?
Let D = $ 100
She spent on blouse: (20/100) * 100 = $ 20 .... (1)
Remaining amount that she has: $ 80
Of this 25% ie 1/4 she spent on shoes. So amount that she spent on shoes = $ 80 * (1/4) = $ 20 . .. (2)
Total amount spent = (1) + (2) = $40 and 40/100 = 40%
OA: B
06 Nov 2018, 09:45
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Spent on blouse : 0.2D
Spent on shoes: 0.25(1-0.2)D=0.25*0.8 D= 0.2D
Total spent = 0.2D+0.2D =0.4D i.e, 40 % of D dollars.... Ans B
Spent on shoes: 0.25(1-0.2)D=0.25*0.8 D= 0.2D
Total spent = 0.2D+0.2D =0.4D i.e, 40 % of D dollars.... Ans B
