book Maths Puzzle Numerical Ability

The ratio of spaniels to poodles at teh dog show was 5 to 7. If there were 35 spaniels at the dog show, how many poodles werw there?(Use a ratio box) P.S. thank you for the help.

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What is the sum of the first 30 positive odd whole numbers? is there some kind of relationship between the two? The Pythagoean theorem is so complicated! How do you solve a=5,b=12, and c=?