If the mean height of 3 boys is 142 cm. and the mean height of another 7 students is 145 cm., then the mean height of 10 students.

If the mean height of 3 boys is 142 cm. and the mean height of another 7 students is 145 cm., then the mean height of 10 students.

A) 144 cm

B) 144.1 cm

C) 144.2 cm

D) 144.4 cm

Monjur Alahi

5 views

2025-01-04 04:42

0 Answers

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