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3/8 of her remaining money = 1/4 of her

original

money

8/8 of her remaining money = 1/4 / 3/8

= 2/3 of her

original money

Therefore 1/3 of her original money was spent on the book.

1/3 = $19.20

2/3 = 38.40

Money spent on pen and stamps

= 5/8 * 38.40 = $24

Price of 1 Pen = price of 2 stamps

1P = 2S

3S = $24

1P = [24/3] * 2 = $16

original

money

8/8 of her remaining money = 1/4 / 3/8

= 2/3 of her

original money

Therefore 1/3 of her original money was spent on the book.

1/3 = $19.20

2/3 = 38.40

Money spent on pen and stamps

= 5/8 * 38.40 = $24

Price of 1 Pen = price of 2 stamps

1P = 2S

3S = $24

1P = [24/3] * 2 = $16

Thank you

=19.2 * 3 = $57.60

Amount spent on stamps = 24/3 = $8

Fraction= 8/57.6 = 5/36