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Use of Algebraic Expressions in Formula of Area of Figures

I have 90 b...

Question

I have $90$ beads. How many beads are to be added to make their number $8$ dozen?

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Solution

WE have initially $90$ beads
one dozen comprises of $12$ beads
So, $8$ dozen $= 8 \times 12 = 96$
Number of beads to be added $= 96 - 90 = 6$

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