The average height of 5 boys is 175 cm. A sixth boy joined the group and the average height of all the boys in the group now increased by one centimeter. The height of the sixth boy is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e 181 cm.
| Understanding/Application |
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Average of the height of 5 boys = 175 cm Total height of 5 boys = 5(175) = 875 cm Average height after joining of the 6th boy = 175 + 1 = 176 cm |
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Sum of height of 6 boys = 6(176) = 1056 cm Height of the 6th boy = 1056 - 875 = 181 cm |