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? Select
A) 3 B) 4 C) 6 D) 8 E) 12
<gadget id="calculator">3 * 24</gadget>
<output>72</output>

<gadget id="calculator">90 - 72</gadget>
<output>18</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">18 / 6</gadget>
<output>3</output>

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<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?
divide(24, divide(subtract(90, multiply(3, 24)), multiply(3, const_2)))
there are twice as many girls as boys in the class - - > g = 2 b . each girl writes 3 more letters than each boy - - > boys write x letters , girls write x + 3 letters . boys write 24 letters - - > bx = 24 . girls write 90 - 24 = 66 letters - - > ( 2 b ) ( x + 3 ) = 66 - - > 2 bx + 6 b = 66 - - > 2 * 24 + 6 b = 66 - - > b = 3 . bx = 24 - - > 3 x = 24 - - > x = 8 . answer : d .