Question

Ques 2. The average weight of 45 passenger on board an aircraft is 50 kg. If the weight of 5
members of the crew is added, the average is reduced by half kilogram. What is the average
weight of the crew members?
a. 35 kg. b. 55kg. c. 45kg. 60kg​

Answer 1

Answer:Total weight of 45 passenger = 45 x 50 = 2250 kg Total weight of 45 passenger and 5 crews = 50 x 49.5 = 2475 kg Total weight of 5 crews = 2475-2250 = 225kg Average weight of 5 crews = 225/5 = 45kg.

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Step-by-step explanation:

Answer 2

Given,

The average weight of 45 passengers = 50 kg

If the weight of 5 crew members is added the average is reduced by half kilograms.

To Find,

The average weight of the crew members.

Solution,

Let the sum of the weights of the passengers be P and crew members be C

So,

P/45 = 50

P = 2250

Now, the weight of the crew members is also added

(P+C)/50 = 49.5

2250+C = 49.5*50

C = 2475-2250 = 225

Now,

C/5 = 225/5 = 45 kg

Hence, the correct answer is option (c) 45 kg.