Question

The average of three numbers is 77. The first number is twice the second and the second number is twice the third. The first number is

Answer 1

Answer:

Let the three numbers be = x, y, z

$\frac{x + y + z}{3} = 77$

x + y + z = 231 ...(1)

According to question, equations formed:

x = 2y

y = 2z

.°. x = 4z

Put these in (1):

2z + 4z + z = 231

=》 z = 33

x = 4z

=> x = 132