a gambler has won 40 % of his 30 poker games for the week so far. if, all of a sudden, his luck changes and he begins winning 70 % of the time, how many more games must he play to end up winning 60 % of all his games for the week?  Choose the correct answer.
A) 36 B) 42 C) 48 D) 54 E) 60
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">30 * (3/5)</gadget>
<output>18</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

<gadget id="calculator">18 - 12</gadget>
<output>6</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(7/10) - (3/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">6 / (1/10)</gadget>
<output>60</output>

<result>E</result>
a gambler has won 40 % of his 30 poker games for the week so far. if, all of a sudden, his luck changes and he begins winning 70 % of the time, how many more games must he play to end up winning 60 % of all his games for the week?
divide(subtract(multiply(30, divide(60, const_100)), multiply(30, divide(40, const_100))), subtract(divide(70, const_100), divide(60, const_100)))
let x be the number of additional games the gambler needs to play . 0.4 ( 30 ) + 0.7 x = 0.6 ( x + 30 ) 0.1 x = 6 x = 60 the answer is e .