Answer:
20 over 3
Step-by-step explanation:
Answer:
There are 9 teachers in the auditorium.
Step-by-step explanation:
81*1/9=9
Answer:
Answer:age of new student is 13.4 years
Step-by-step explanation:
SUM of ages all 40 students =average age times 40
=15*40=600
after leaving 18 years old student
SUM of ages of 39 students will be 600-18=582
after adding new student with age x
SUM of ages of 40 students will become 582+x
and the average would be (582+x)/40
which is given as 14.885
so we get equation
(582+x)/40=14.885
582+x=14.885*40=595.4
x=595.4-582
x= 13.4
age of new student is 13.4 years
Hope it will help you
Please mark as brainliest answer
Answer:
60
Step-by-step explanation:
12x5=60 and 15x4=60 so 60 is the LCM
Answer:
x = -33
Step-by-step explanation:
