Solve the Problem $\frac { 6 } { 7 }$ As Many Vibrations as in the Previous Second

Multiple Choice

Solve the problem.
-After being struck with a hammer, a gong vibrates 54 vibrations in the first second and in each second thereafter makes $\frac { 6 } { 7 }$ as many vibrations as in the previous second. Find how many vibrations the gong makes before it
Stops vibrating.

A) 388 vibrations
B) 63 vibrations
C) 58 vibrations
D) 378 vibrations