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Deshawn and Tyriq can weed their garden in 30 minutes together. Alone, it takes Tyriq 75 minutes to weed the garden.
How long does it take Deshawn to weed the garden alone?
minutes

Deshawn and Tyriq can weed their garden in 3030 minutes together. Alone, it takes Tyriq 7575 minutes to weed the garden.\newlineHow long does it take Deshawn to weed the garden alone?\newlineminutes

Full solution

Q. Deshawn and Tyriq can weed their garden in 3030 minutes together. Alone, it takes Tyriq 7575 minutes to weed the garden.\newlineHow long does it take Deshawn to weed the garden alone?\newlineminutes
  1. Define Rates: Let's denote the rate at which Deshawn can weed the garden alone as DD (gardens per minute) and the rate at which Tyriq can weed the garden alone as TT (gardens per minute). We know that Tyriq can weed the garden in 7575 minutes, so his rate is T=1 garden75 minutesT = \frac{1 \text{ garden}}{75 \text{ minutes}}.
  2. Express Combined Rate: Since Deshawn and Tyriq can weed the garden together in 3030 minutes, their combined rate is 11 garden / 3030 minutes. We can express this combined rate as D+TD + T.
  3. Set Up Equation: Now we can set up the equation for their combined rate: D+T=130D + T = \frac{1}{30}. We already know that T=175T = \frac{1}{75}, so we can substitute this into the equation to find DD.
  4. Substitute and Solve: Substituting TT into the equation gives us D+175=130D + \frac{1}{75} = \frac{1}{30}. To solve for DD, we subtract 175\frac{1}{75} from both sides of the equation.
  5. Find Common Denominator: After subtracting, we get D=130175D = \frac{1}{30} - \frac{1}{75}. To subtract these fractions, we need a common denominator, which is 150150.
  6. Convert Fractions: Converting both fractions to have a denominator of 150150 gives us D=(5150)(2150)D = \left(\frac{5}{150}\right) - \left(\frac{2}{150}\right).
  7. Subtract Fractions: Subtracting the fractions gives us D=(52)/150D = (5 - 2) / 150, which simplifies to D=3/150D = 3/150.
  8. Simplify Fraction: Simplifying the fraction 3150\frac{3}{150} gives us D=150D = \frac{1}{50}. This means Deshawn can weed 11 garden in 5050 minutes alone.

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