Question

WW 11 The table shows information about the weights of the people in a hotel lift. Weight 40kg 50 kg 60 kg 70kg 80kg 90 kg Number of people 1 2 5 3 1 Show that the total weight of the people in the lift is less than 1200kg.

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Answer 1

.....weight 40 50 60 70 80 90

number of people 1 2 5 3 1 0

total weight 40+2*50 + 5*60 + 3*70 +80 =730kg

Explanation: