Question

The mean weight of 15 students is 55 kg. The mean weight of 5 of them is 50 and 5 of them is 62.5. weight of the remainder

Answer 1

Answer:

so add 50 +62.5=112.5

then subtraction of 112.5-50 =62.5

Answer 2

Step-by-step explanation:

15×55 = 5×50 + 5×62.5 + 15× x

825 = 250 +312.5 + 15x

825 = 562.5 + 15x

x = 262.5/15

x = 17.5