In a certain boys camp, 20% of the total boys are from school A and 30% of those study science. If there are 49 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?  Choose the correct choice from the following answers
A) 70 B) 245 C) 150 D) 35 E) 350
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 49, so 0.14*{total}= 49 --&gt; {total} = 350.   Answer: 350.
<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 49 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?