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The average weight of 15 iron bars is 1000 kg. If the heaviest iron bar...

Mathematics
JAMB 2025

The average weight of 15 iron bars is 1000 kg. If the heaviest iron bar is removed, the average weight is reduced by 5 kg. Find the weight in kg of the heaviest iron bar.

  • A. 1170kg
  • B. 1270kg
  • C. 1070kg
  • D. 1370kg
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Correct Answer: Option C
Explanation

Total weight = 15 × 1000 = 15000 kg.

New average = 1000 - 5 = 995 kg.

Total for 14 bars = 14 × 995 = 13930 kg.

Heaviest = 15000 - 13930 = 1070 kg.

There is an explanation video available below.

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Explanation Video

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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now