Problems on Ages

Quantitative Aptitude - Problems on Ages

Solve age comparison and change-over-time problems with age algebra and progressive changes.

1. Basic Approach

Let present ages be variables (e.g., age of A = a, B = b).

Write equations for each statement with time-shifts: "x years ago" → a-x, "y years hence" → b+y.

2. Common Formats

• Sum/difference now or in the future/past.
• Ratio forms involving time shifts.

3. Quick Tips

• Set up equations based on "years ago" or "hence" correctly.
• Use substitution to reduce variables when two equations are given.

4. Mistakes to Avoid

• Mixing past and future incorrectly.
• Ignoring ratio context when time changes apply.

5. Revision Checklist

• Practice translating English to age equations accurately.
• Use elimination or substitution strategies quickly.

Summary: Convert descriptions into simple time-shift equations, solve for variables swiftly, and verify with original statements.