In a certain boys camp, 20% of the total boys are from school A and 30% of those study science. If there are 35 boys in the camp that are from school A but do not study science then what is the total number of boys in the camp?	Choices.
A) 70	B) 245	C) 150	D) 35	E) 250
Since 30% of the boys from school A study science, then 70% of the boys from school A do NOT study science and since 20% of the total number of boys are from school A, then 0.2*0.7= 
<gadget id="calculator">0.2*0.7</gadget>
<output>0.14</output>
0.14, or 14% of the boys in the camp are from school A and do not study science.   We are told that this number equals to 35, so 0.14*{total}= 35 --&gt; {total} = 250.   Answer: 250.
<result>E</result>
In a certain boys camp, 20% of the total boys are from school A and 30% of those study science. If there are 35 boys in the camp that are from school A but do not study science then what is the total number of boys in the camp?