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Divisbility problems 1. If r is the reminder when N is

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Joined: 29 Aug 2007
Posts: 110
Divisbility problems 1. If r is the reminder when N is [#permalink]

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22 Sep 2007, 08:39
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Divisbility problems

1. If r is the reminder when N is divided by 7 what is R?

a. When N is divided by 21 the remainder is odd
b. when N is divided by 28 remainder is 3

2. A certain candy manufacturer reduced the weight of the candy bar by 20% , but left the price unchanged , what was the resulting % increase per ounce of candy bar M ?

3. Bobby bought 2 shares of stock which he sold for $96 each, if he had profit of 20% on one and lost off 20% on another, on the sale of both Bobby had ? 1. Loss 0f$8
2. Gain of $10 3. Neither gain Neither loss 4. Loss of$ 10

A hiker walking at constant rate of 4 Miles / hour is passed by cyclikst in the same direction along the same path travelling at a constant rate of 20 M/ hour. The clyclist stops to wait for the hiker 5 minutes after passing her while the hiker continues to walk at her constant rate. How many minutes must the cyclist stop until the hiker catches up.
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Joined: 08 Jun 2005
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23 Sep 2007, 08:38
Bobby bought 2 shares of stock which he sold for $96 each, if he had profit of 20% on one and lost off 20% on another, on the sale of both Bobby had ? 1. Loss 0f$8
2. Gain of $10 3. Neither gain Neither loss 4. Loss of$ 10

(96*2-(x+y)) = ?

stock 1

96 = 1.2x

x = 80

stock 2

96 = 0.8y

120 = y

solve:

(96*2-(x+y)) = ?

(192-120-80) = 8 loss

23 Sep 2007, 08:38
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