The average weight of 40 passengers in a bus is 58 kg. When the weight of the driver, conductor and their two helpers is included, the average weight increased by 2 kg. When the weight of the bus is also included, the average weight becomes 7 times the av

The average weight of 40 passengers in a bus is 58 kg. When the weight of the driver, conductor and their two helpers is included, the average weight increased by 2 kg. When the weight of the bus is also included, the average weight becomes 7 times the average weight of the passengers, driver, conductor and their two helpers. Find the weight of the bus.
1). 16260 kg
2). 16480 kg
3). 16610 kg
4). 16850 kg

Average weight of 40 passengers = 58 kg

When driver, conductor & 2 helpers are included, average weight of 40 + 4 = 44 people = 58 + 2 = 60 kg

⇒ Total weight of 44 people = 44 × 60 = 2640 kg

When the weight of bus is also included, average weight = 7 × 60 = 420 kg

⇒ Total weight of bus & 44 people = 45 × 420 = 18900 kg

∴ Weight of bus = 18900 – 2640 = 16260 kg

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