Three Bean Salad

Ingredients

• 1 (1 lb.) can green beans, drained
• 1 (1 lb.) can yellow wax beans, drained
• 1 (1 lb.) can red kidney beans, drained
• 1 medium onion, sliced and separated into rings
• 1/2 c. salad oil
• 2/3 c. sugar
• 1/2 c. vinegar
• 1 tsp. salt
• 1/2 tsp. pepper