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Hi, i m still confused. Can explain further.
Thanks

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Hi. First you need to find the fraction of boys and girls that remained in the hall. Since the fraction of girls remained is equal to fraction of boys remained, you need to make the numerator the same. Then the sum of these denominators will be the total units, and this is equal to 319. This is Equal Fraction Concept.

Hope you get it 🙂

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Now i understand…thanks

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(a)
girls : 7u – 2u = 5u
boys : 3p – 1p = 2p

7u + 3p ——- 319
35u + 15p ——- 1595
5u ——- 2p
35u ——- 14p
14p + 15p = 29p ——- 1595
1p ——- 55
2p ——- 110

(b)
5u ——- 110
1u ——- 22
7u ——- 154

Ans : (a) 110 boys; (b) 154 girls.

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