Easy GMAT problem solving question in ratio and proportion.
Concept: Combining 2 ratios into 1 ratio and finding the answer. About 3 to 4 questions in the GMAT test your understanding of ratios.
The sum of the ages of 3 friends is 122. If the ratio of the ages of the oldest to the middle one is 5:4 and that of the middle one to the youngest is 5:4, how much older is the oldest of the lot than the youngest?
Pro tip: Usually 3 to 4 questions in the GMAT quant section test your understanding about the basics of ratio, proportion, and variation. Questions could appear in both problem solving and data sufficiency formats from this topic.
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