Boys and girls in a class are writing letters. There are twice as many girls as boys in the class, and each girl writes 3 more letters than each boy. If boys write 24 of the 90 total letters written by the class, how many letters does each boy write?
Choose the correct option
A) 3	B) 4	C) 6	D) 8	E) 12
There are twice as many girls as boys in the class --&gt; g = 2b.   Each girl writes 3 more letters than each boy --&gt; boys write x letters, girls write x+3 letters.   Boys write 24 letters --&gt; bx = 24.   Girls write 90-24= 
<gadget id="calculator">90-24</gadget>
<output>66</output>
66 letters --&gt; (2b)(x+3)= 66 --&gt; 2bx + 6b = 66 --&gt; 2*24 + 6b = 66 --&gt; b = 3.   bx = 24 --&gt; 3x = 24 --&gt; x = 8.   Answer: 8.
<result>D</result>
Boys and girls in a class are writing letters. There are twice as many girls as boys in the class, and each girl writes 3 more letters than each boy. If boys write 24 of the 90 total letters written by the class, how many letters does each boy write?