Solve the Problem $\frac { 4 } { 5 }$ As Many Vibrations as in the Previous Second

question 156

Multiple Choice

Solve the problem.
-After being struck with a hammer, a gong vibrates 32 vibrations in the first second and in each second thereafter makes $\frac { 4 } { 5 }$ as many vibrations as in the previous second. Find how many vibrations the gong makes before it stops vibrating.

• A) 40 vibrations
• B) 35 vibrations
• C) 160 vibrations
• D) 170 vibrations

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