Question

The mean of 30 observations is 12 . If 25 is subtracted from the sum of observations, then remaining sum is:
a)365
b)335
c)385
d)375

Answer 1

Answer:

335

Step-by-step explanation:

mean=30

let x be sum of no. observation s

therefore,

30=x+25/12

360=x+25

x=335

Answer 2

Answer:

335

Step-by-step explanation:

mean=30

let x be sum of no. observation s

therefore,

30=x+25/12

360=x+25

x=335