Question

AVERAGE
The average of 7,11,15,x,14,21,25,is 15, then the
value of x is
a. 3
b. 12
C. 13.3
d. 14.5
The ratio of ducks and frogs in a pond is 37:41. The
average of ducks and frogs is 156. What is the
number of frogs in the pond?
a. 78
b. 74
d. 164
The average age of three boys is 15 years. If their
ages are in the ratio 3:5:7, then the age of the
youngest boy is
a. 9 years b. 15 years c. 18 years d. 21 years
on numbers is 2015 is added to
C. 82​

Answer 1

The average of 7,11,15,x,14,21,25 is 15, then the value of x is

A) 12

B) 13.3

C) 3

D) 14.5

Correct Answer:

A) 12

Answer 2

Answer:

a,c,d,and just work and