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The price relatives and weights of a set of commodities are given below: Commodity A B C D Price…
The price relatives and weights of a set of commodities are given below:
If the sum of the weights is 40 and weighted average of price relatives index number is 122, find the numerical values of $x$ and $y$.
| Commodity | A | B | C | D |
|---|---|---|---|---|
| Price relatives | 125 | 120 | 127 | 119 |
| Weights | $x$ | $2x$ | $y$ | $y + 3$ |
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From ISC 2017 Mathematics Paper 1, question 15(a).