Question
If the demand function is $x=50-3 p$, find marginal
revenue at $x=10$.
revenue at $x=10$.
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| Items | $A$ | $B$ | $C$ | $D$ | $E$ | $F$ |
| Weight | $5$ | $10$ | $10$ | $30$ | $20$ | $25$ |
| Percentage price relative | $290$ | $315$ | $280$ | $300$ | $315$ | $320$ |
| Particulars | $x$ | $Y$ |
| Average | $60$ | $95$ |
| The sum of squares of deviations taken from their mean | $920$ | $1050$ |
| The sum of product of deviations taken from their mean | $-545$ | |