A box contains 90 nuts each of 100 gms and 100 bolts each of 150 gms. If the entire box weighs 35.5 kg., then the weight of the empty box is Choose the correct choice from the following answers:
A) 8
B) 9.5
C) 10
D) 11.5
E) 12
Let w(e) be weight of empty box.   Total weight = 35.5 Kg   Weight of nuts, w(n) = 90 * 100= 
<gadget id="calculator">90 * 100</gadget>
<output>9_000</output>
9000gms= 9 kg   Weight of bolts, w(b) = 100 * 150= 
<gadget id="calculator">100 * 150</gadget>
<output>15_000</output>
15000gms= 15 kg   Total weight = w(n)+w(b)+w(e)   w(e) = Total weight-w(n)-w(b)   =&gt; w(e) = 35.5-15-9= 
<gadget id="calculator">35.5-15-9</gadget>
<output>11.5</output>
11.5 Answer : 11.5
<result>D</result>
A box contains 90 nuts each of 100 gms and 100 bolts each of 150 gms. If the entire box weighs 35.5 kg., then the weight of the empty box is