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Stels [109]
3 years ago
13

Decrease 20 sec by 20%

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
4 0
Answer: 16 seconds
To decrease it by 20% percent,
We need to first find amount by:
=20*100/20
=4
Therefore 20% of 20 second is 4 seconds
Now let’s decrease it:
20-4
16
Therefore we get 16 second by decreasing 20% of 20 seconds


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What is the value of a? <br> 14 – 2a = 4a – 16
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