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Box A : Box B
3u : 5u
When 10 beads were transferred from Box A to Box B,
Box A : Box B
1p : 3p
3u – 10 ——- 1p
9u – 30 ——- 3p
5u + 10 ——- 3p
9u – 30 ——- 5u + 10
9u – 5u = 4u ———- 10 + 30 = 40
1u ———- 40/4 = 10
3u ——- 3 x 10 = 30
Ans : 30 beads.
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Identify that total beads did not change during this movement.

Make total units be 8 units

so A:B = 3:5         —–> 2:6        , caused by moving 10 beads from A to B  

So 1 unit is 10 beads and 8 units is 80 beads#

 

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