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10 June, 03:10

1. A commercial says," A Widget sells for $20. If you buy now, we will discount your Widget 15%. But wait, if you buy in the next five minutes, we will give a second Widget for free." You take ad vantage of this terrific deal. What will you pay per Widget?

2. The scale on a set of house plains is 1/4 inch = 1 foot. How long is a wall on a room that measures 3 1/2 inches on the drawing?

3. Juan's father agreed to pay 1/3 of the cost of Juan's new bike. Juan's father paid $37. How much did the bike cost?

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  1. 10 June, 05:43
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    1. Off of the first deal, our discount is (20) (1-.15) = 17. However, because we get two widgets from this offer, we have half the price per widget, so per widget we pay 17/2=$8.50.

    2. 3 1/2 is 14/4 inches. Since 1/4 inches is equal to one foot in this scale, the wall is 14 feet long.

    3. We see that $37 is a third of the cost of the bike, so the full cost is 37*3=$111.
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