Fresh grapes contain 75% water by weight and raisins obtained by drying fresh grapes contain 25% water by weight. How many kgs of fresh grapes are needed to get 25 kgs of raisins?
Choose the correct choice from the following answers:  A) 75 kgs  B) 64kgs  C) 72 kgs  D) 65 kgs  E) 70 kgs
The weight of non-water in 20 kg of dried grapes (which is 100-25= 
<gadget id="calculator">100-25</gadget>
<output>75</output>
75% of whole weight) will be the same as the weight of non-water in x kg of fresh grapes (which is 100-75= 
<gadget id="calculator">100-75</gadget>
<output>25</output>
25% of whole weight),   so 25*0.75= x*0.25   --&gt; x = 75.   75 kgsnswer: 75 kgs.
<result>A</result>
Fresh grapes contain 75% water by weight and raisins obtained by drying fresh grapes contain 25% water by weight. How many kgs of fresh grapes are needed to get 25 kgs of raisins?