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a)
3 x 4 = 12
(1/3) x 12u = 4u (dress)
12u – 4u = 8u (remainder)
(3/4) x 8u = 6u (necklace)
12u – 4u – 6u = 2u (saved)
6u ——- 1026
1u ——- 1026/6 = 171
2u ——- 171 x 2 = 342

(b)
12u ——- 171 x 12 = 2052

Ans : (a) $342; (b) $2052.

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