john and ingrid pay 30 % and 40 % tax annually, respectively. if john makes $ 60000 and ingrid makes $ 72000, what is their combined tax rate?  Choose the correct option:	A) 32 %	B) 34.4 %	C) 35 %	D) 35.6 %	E) 36.4 %
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 60_000</gadget>
<output>18_000</output>

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

<gadget id="calculator">(2/5) * 72_000</gadget>
<output>28_800</output>

<gadget id="calculator">18_000 + 28_800</gadget>
<output>46_800</output>

<gadget id="calculator">72_000 + 60_000</gadget>
<output>132_000</output>

<gadget id="calculator">46_800 / 132_000</gadget>
<output>39/110 = around 0.354545</output>

<gadget id="calculator">(39/110) * 100</gadget>
<output>390/11 = around 35.454545</output>

<result>D</result>
john and ingrid pay 30 % and 40 % tax annually, respectively. if john makes $ 60000 and ingrid makes $ 72000, what is their combined tax rate?
multiply(divide(add(multiply(divide(30, const_100), 60000), multiply(divide(40, const_100), 72000)), add(72000, 60000)), const_100)
"( 1 ) when 30 and 40 has equal weight or weight = 1 / 2 , the answer would be 35 . ( 2 ) when 40 has larger weight than 30 , the answer would be in between 35 and 40 . unfortunately , we have 2 answer choices d and e that fit that condition so we need to narrow down our range . ( 3 ) get 72000 / 132000 = 6 / 11 . 6 / 11 is a little above 6 / 12 = 1 / 2 . thus , our answer is just a little above 35 . answer : d"