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Six friends have an average height of 167 cms. A boy with height 162 cm leaves the group. Find the new average height.
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- 168 cm
- 166 cm
- 169 cm
- 167 cm
- 168 cm
Correct Option: A
Total height of 5 friends = (6 × 167 – 162) cm.
Total height of 5 friends = (1002 – 162) cm.
Total height of 5 friends = 840 cm.
| ∴ Required average = | = 168 cm. | |
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