Weighted index of the four investments combined

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Three investments,X , Y and Z, are grouped into a single fund with weightings of 145, 156 and 99 respectively. Over a period of 4 years they increase in value, with each increase expressed as an index as shown in the following table:

          Investment                          Index                               Weighting

          A                                           154                                  145

          B                                           145                                  156

          C                                           130                                  99

(a) Calculate the composite (weighted) index for the three investments combined. 

A second fund includes the same three investments, A, B and C, together with a fourth investment D.The weightings of investments A, B and C are as above, and the weighting of investment D is 50.Over the same period, the weighted index of the four investments combined is 141.6.

(b) Calculate the index representing the increase in value of investment D, over the four -year period.

Reference no: EM131079436

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