Question

a 3. The average attendance of a school for the first three days of a week 325 and for the first four days is 320. How many were present on the fourth day?​

Answer 1

Answer:

305

Step-by-step explanation:

Avg= sum/no

Avg of 1st 3 days=sum/no

avg=sum/3

325=sum/3

sum= 325*3

sum= 975

Avg of 1st 4 days= sum/no

avg=sum/4

320=sum/4

sum=320*4

sum=1280

1280-975

305

305 students present in forth day