Four pipes can fill a tank in 70 minutes. how long will it take to fill the tank with 7 pipes are used

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Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?