a solution contains 8 parts of water for every 7 parts of lemonade syrup. how many parts of the solution should be removed and replaced with water so that the solution will now contain 35 % lemonade syrup?	Choose the most appropriate option.
A) 1.5 B) 1.75 C) 2.14 D) 2.34 E) 2.64
<gadget id="calculator">8 + 7</gadget>
<output>15</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(7/15) - (2/5)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/15) / (7/15)</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/7) * 15</gadget>
<output>15/7 = around 2.142857</output>

<result>C</result>
a solution contains 8 parts of water for every 7 parts of lemonade syrup. how many parts of the solution should be removed and replaced with water so that the solution will now contain 35 % lemonade syrup?
multiply(divide(subtract(divide(7, add(8, 7)), divide(const_2, add(const_2, const_3))), divide(7, add(8, 7))), add(8, 7))
"let the total solution is 150 l with 80 l water 70 l syrup . to make 35 % syrup solution , the result solution must have 97.5 l syrup and 52.5 l syrup . therefore we are taking 17.5 l of syrup from initial solution and replacing with water . using urinary method : 70 l syrup in 150 l solution 17.5 l syrup in 37.5 l solution we started by multiplying 10 now to get to the result we need to divide by 17.5 = > amount of solution to be replaced with water ( 37.5 / 17.5 ) = 2.14 . correct option : c"