The avg weight of A,B & C is 84 kg. If D joins the group, the avg weight of the group becomes 80 kg.If another man E who weights is 3 kg more than D Replaces A, Then the avgof B,C,D&E becomes 79 kg. What is the weight of A?  Pick:  A) 60  B) 34  C) 75  D) 87  E) 94
A + B + C = 3 *84= 
<gadget id="calculator">3 *84</gadget>
<output>252</output>
252   A + B + C + D= 4 * 80= 
<gadget id="calculator">4 * 80</gadget>
<output>320</output>
320 ---- (i)   So, D= 68&amp; E = 68 + 3= 
<gadget id="calculator">68 + 3</gadget>
<output>71</output>
71   B + C + D +E= 79 * 4= 
<gadget id="calculator">79 * 4</gadget>
<output>316</output>
316 --- (ii)   From Eq. (i) &amp; (ii)   A-E= 320 – 316 = 4   A = E +4 = 71 + 4= 
<gadget id="calculator">71 + 4</gadget>
<output>75</output>
75   75
<result>C</result>
The avg weight of A,B & C is 84 kg. If D joins the group, the avg weight of the group becomes 80 kg.If another man E who weights is 3 kg more than D Replaces A, Then the avgof B,C,D&E becomes 79 kg. What is the weight of A?