Question
Calculate the amount and the compound interest for the following, when cornpounded half-yearly:
$Rs.6,000$ for $1 \frac{1}{2}$ years at $10 \%$ p.a.
$Rs.6,000$ for $1 \frac{1}{2}$ years at $10 \%$ p.a.
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| category | A | B | C | D | E | F |
| Wages (Rs,day)(x) | 50 | 60 | 70 | 80 | 90 | 100 |
| no.of workers | 2 | 4 | 8 | 12 | 10 | 6 |
(1) If the number of workers in each category is doubled, , what would be the new mean wage?
(2) If the wages per day in each category are incresed by 60% what is the new mean wages?
(3) If the number of workers in each caategory is doubled is and the wages per day worker are reduced by 40%, what would be the new mean wage?
A dealer in Mumbai supplied an item at the following prices to a dealer in Delhi. Find the total amount of the bill.
| Rate per piece (in Rs.) | Quantity (no. of pieces) | Discount % | SGST % |
| 180 | 10 | Net | 9 |
| 260 | 20 | 20 | 9 |
| 310 | 30 | Net | 9 |
| 175 | 20 | 30 | 9 |
| Marks | No. of boys |
| $30-40$ | $10$ |
| $40-50$ | $12$ |
| $50-60$ | $14$ |
| $60-70$ | $12$ |
| $70-80$ | $9$ |
| $80-90$ | $7$ |
| $90-100$ | $6$ |
| x | 4 | 6 | 9 | 10 | 15 |
| f | 5 | 10 | 10 | 7 | 8 |
| Height (in cm) | More than10 | More than 20 | More than 30 | More than 40 |
| No. of plants | 50 | 36 | 18 | 5 |