Question

6.
The average height of A, B and C is 120 cm. A's height is 115 cm and B's height is 125 cm.
Find the height of C.
(3
2​

Answer 1

Answer:

Step-by-step explanation:

short method,

if A+B+C = 150cm

value of A+B = 130

then ,

putting the value,

A+B+C = 150

140 + C = 150

C = 150-140

= 10cm

and, B+C = 130

B + 10 = 130

B. = 130-10 = 120cm