The number of stamps in the collections of Suniyo, Nobita, and Suzuka are in the ratio 3∶4∶5. If Nobita has a collection of 108 stamps, find the number of stamps that Suniyo, and Suzuka each has.

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Solution

The number of stamps in the collections of Suniyo, Nobita, and Suzuka are in the ratio

$3 ∶ 4 ∶ 5$

Sum $= 3 + 4 + 5 = 12$

Let the number of stamps with Suniyo be 3x. Then Nobita will have 4x stamps and Suzuka will have 5x stamps.

We are given that, number of stamps with Nobita, 4x=108 stamps

$x = \frac{108}{4} = 27$ stamps

Number of stamps with Suniyo, 3x=3×27=81 stamps

Number of stamps with Suzuka, 5x=5×27=135 stamps

$∴$ Suniyo has 81 stamps and Suzuka has 135 stamps.

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