Question

the mean of 20 students is 22 is added to first 10 numbers find the new mean of set of 20 numbers​

Answer 1

Answer:

33

Step-by-step explanation:

total of the students marks is

$20 \times 22 = 440$

New total after 22 is added to first 10 students is

$440 + (10 \times 22) = 440 + 220 = 660$

hence new mean is

$\frac{660}{20} = 33$