Answer:

The smaller number in the ratio of 3:5 is:

15

Solution:

- Add the ratio.

⇒ 3 + 5 = 8

- Divide the sum to the whole unit.

⇒ 40 ÷ 8 = 5

- Multiply the quotient to the given ratio.

⇒ 3:5 × 5 = 15:25

Hope it helps!

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