exam Maths Puzzle Numerical Ability

Explain what it means for an equation to have an extraneous solution. Give an example.

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graph all ages for free admission. you get in free younger than 5 or 62 or older (36) Ride the peaks. Smith bicycled 45 miles going from Durango, and Jones bicycled 70 miles. Jones averaged 5 miles per hour more than Smith, and his trip took one-half hour longer thank Smith�s. How fast was each one traveling?