Average Practice Test 5

Question : 15 of 40

Marks: +1, -0

The average height of 14 girls of Section A is 162 cm and of 16 girls of Section B is 165 cm. Find the average height of all the girls taken together.

163.6 cm
163 cm
162.6 cm
161.6 cm
164 cm

Validate

Solution:

Total height of girls of Section A = 162 × 14 = 2,268 cm
Total height of girls of Section B = 165 × 16 = 2,640 cm
∴ Average height of all the girls

=({2,268 +2,640}/30) cms

= 163.6 cm

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