The average weekly payment to $75$ workers in a factory is $R s . 5680$ . The mean weekly payment to $25$ of them is $R s . 5400$ and that of $30$ others is $R s . 5700$ . Find the mean weekly payment of the remaining workers.

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Solution

Total salary of $75$ workers $= ₹ 5680 \times 75 = ₹ 426, 000$
Total salary of $25$ workers $= ₹ 5400 \times 25 = ₹ 135, 000$
Total salary of $30$ workers $= ₹ 5700 \times 30 = ₹ 171, 000$
No. of remaining workers $= 75 - (25 + 30) = 20$
Total salary of $20$ workers $= ₹ (426, 000 - 135, 000 - 171, 000)$
$= ₹ 120000$
$∴$ The mean weekly payment of the $20$ workers $= \frac{120000}{20}$
$= ₹ 6000$
Hence, the mean weekly payment of the remaining workers is $₹ 6000$ .

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The average weekly payment to 75 workers in a factory is Rs.5680. The mean weekly payment to 25 of them is Rs.5400 and that of 30 others is Rs.5700. Find the mean weekly payment of the remaining workers.

The average weekly payment to $75$ workers in a factory is $R s . 5680$ . The mean weekly payment to $25$ of them is $R s . 5400$ and that of $30$ others is $R s . 5700$ . Find the mean weekly payment of the remaining workers.