The mean of eight adults is 1m 42cm. The height of six of the adults were recorded as follows: 1. 1m 36cm, 1m 41cm, 1m 52cm, 2....

      

The mean of eight adults is 1m 42cm. The height of six of the adults were recorded as follows:
1. 1m 36cm, 1m 41cm, 1m 52cm
2. 1m 30cm, 1m 50cm, 1m 37cm
The remaining two adults are of equal heights. What is the height of each of the remaining adults?

A. 1m 40cm
B. 1m 41cm
C. 1m 43cm
D. 1m 45cm

  

Answers


Wilfred
The correct answer is 1m 45cm [D]

- Mean height of 8 adults
1 m 42cm = 100cm+ 42cm = 142 cm
Total height= 142x 8 = 1, 136
- Heights for six adults
136 cm, 141 cm, 152+ 130 + 150 + 137 = 846
- Height for the remaining two adults = 1136- 846= 290
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Wilfykil answered the question on July 29, 2019 at 07:43


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