a certain drink of type a is prepared by mixing 4 parts milk with 3 parts fruit juice. another drink of type b is prepared by mixing 4 parts of fruit juice and 3 parts of milk. how many liters of fruit juice must be added to 105 liters of drink a to convert it to drink b?
Pick one
A) 14	B) 21	C) 28	D) 35	E) 42
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) * 105</gadget>
<output>60</output>

<gadget id="calculator">60 * 4</gadget>
<output>240</output>

<gadget id="calculator">240 / 3</gadget>
<output>80</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(3/7) * 105</gadget>
<output>45</output>

<gadget id="calculator">80 - 45</gadget>
<output>35</output>

<result>D</result>
a certain drink of type a is prepared by mixing 4 parts milk with 3 parts fruit juice. another drink of type b is prepared by mixing 4 parts of fruit juice and 3 parts of milk. how many liters of fruit juice must be added to 105 liters of drink a to convert it to drink b?
subtract(divide(multiply(multiply(divide(4, add(4, 3)), 105), 4), 3), multiply(divide(3, add(4, 3)), 105))
"in 105 liters of drink a , there are 60 liters of milk and 45 liters of juice . with 60 liters of milk , we need a total of 80 liters of juice to make drink b . we need to add 35 liters of juice . the answer is d ."