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s344n2d4d5 [400]
3 years ago
14

Rohan is 2 years elder than rohit. Five years ago , one third of his age was equal to three-sevenths of rohit's age. Clalculate

their present ages. pl tell with explanation
Mathematics
2 answers:
Oksana_A [137]3 years ago
8 0

Answer:

I hope it will help you.

have a great day . ☺☺

amid [387]3 years ago
8 0

Answer:

Step-by-step explanation:

  • Let Rohan age = x
  • Let Rohit age =y

x = y + 2

(1/3)* (x - 5 ) = (3/7)(y - 5)      Multiply both sides by 3

(x - 5) = 9/7 (y -5)                  Multiply both sides by 7

7(x - 5) = 9(y - 5)                   Remove  the brackets

7x - 35 = 9y - 45                  Add 45 to both sides

7x + 10 = 9y

y = x - 2

7x + 10 = 9(x - 2)

7x + 10 = 9x - 18

7x +10 + 18 = 9x

28 = 2x

x = 14

y = 14 -2

y = 12

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\begin{aligned}\dfrac{4}{4-\sqrt{6x}}&=\dfrac{4(4+\sqrt{6x})}{(4+\sqrt{6x})(4-\sqrt{6x})}\\\\&=\dfrac{4(4+\sqrt{6x})}{(4^2-\sqrt{6x}^2)}\\\\&=\dfrac{4(4+\sqrt{6x})}{(16-6x)}\\\\&=\dfrac{2(4+\sqrt{6x})}{(8-3x)}\\\\&\large \boxed{=\dfrac{8+2\sqrt{6x}}{8-3x}}\end{aligned}

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8 0
3 years ago
Which three expressions are equivalent to 10x +11
BARSIC [14]

Answer:

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8 0
3 years ago
Seven hamburgers and four sodas cost $27.35. Four hamburgers and five sodas cost $18.75
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Answer:

equations:

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Step-by-step explanation:

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5 0
3 years ago
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