Question

7 If the arithmetic mean of 120 numbers is calculated, it is 80. If each number is increased by 5, then mean of new
numbers is​

Answer 1

Answer:

85

Step-by-step explanation:

summation of the numbers = 120 × 80

when each numbers increased by 5

then,

summation of the new numbers = 120 ×(80+5)

now,

mean of new numbers = 120 × 85 /120 = 85