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Melody has 98 stickers. She gives 2/7 of them to her sister and 3/5 of the remainder to her brother. If she wants to increase her collection of stickers to twice what she had originally, how many more stickers must melody buy?

Sagot :

Espeon
2/7 of 98=28
98-28=70
3/5 of 70=42
70-42=28
Original amount x 2=196
196-28=168
She must buy 168 more stickers.

Answer:

168 stickers

Step-by-step explanation:

When she gives out a fraction, there is a reduction in what she has left which is a function of what she originally had before she gave some out.

Given that Melody has 98 stickers and She gives 2/7 of them to her sister.

This means she gave her sister

= 2/7 × 98

= 28

This means she has

= 98 - 28 = 70 stickers left.

If she gave 3/5 of the remainder to her brother. Then she gave

= 3/5 × 70 = 42 stickers

This means she has

= 70 - 42 = 28 stickers left.

If she wants to increase her collection of stickers to twice what she had originally,

This means she wants to have

= 98 × 2 = 196 stickers but she has 28 stickers hence she would have to buy

196 - 28 = 168 stickers

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