Weekly running schedule: Raju runs 1250 m on Monday and Friday, runs 1500 m on other weekdays and Saturday, and rests on Sunday. Starting Monday, how many kilometres does he run in 3 weeks?

Difficulty: Easy

Correct Answer: 25.5 Km

Explanation:


Introduction / Context:
This is a schedule-based arithmetic problem summing weekly distances over multiple weeks, with varying daily amounts and weekly rest days.


Given Data / Assumptions:

  • Mon & Fri = 1250 m each
  • Tue, Wed, Thu, Sat = 1500 m each
  • Sun = 0
  • 3 consecutive weeks starting Monday


Concept / Approach:
Compute one-week total, then multiply by 3. Convert metres to kilometres at the end.


Step-by-Step Solution:

Per week: 1250 + 1250 = 2500 m (Mon & Fri)Per week: 4 * 1500 = 6000 m (Tue, Wed, Thu, Sat)Weekly total = 2500 + 6000 = 8500 m = 8.5 kmThree weeks total = 3 * 8.5 = 25.5 km


Verification / Alternative check:
Counting days explicitly confirms 18 running days and 3 rest Sundays over 3 weeks.


Why Other Options Are Wrong:
They reflect incorrect weekly totals or omission of rest days.


Common Pitfalls:
Forgetting to include Saturday or excluding both Monday and Friday special distances correctly.


Final Answer:
25.5 Km

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