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mr Goodwill [35]
3 years ago
8

From 20 miles to 11 miles -find percent decrease.

Mathematics
2 answers:
Norma-Jean [14]3 years ago
8 0
I think the answer is 9% 
Oduvanchick [21]3 years ago
6 0
ANSWER

The Percentage decrease is
45\%

EXPLANATION

The initial value
20 \: miles

The final value
= 11 \: miles

The percentage decrease can be calculated using the formula,

Percentage \: decrease \: = \frac{final \: value - inital \: value}{initial \: value} \times 100\%

We substitute the values to obtain,

Percentage \: decrease \: = \frac{11 - 20}{20} \times 100\%

This will simplify to,

Percentage \: decrease \: = \frac{ - 9}{1} \times 5\%

Percentage \: decrease \: = - 45\%

The negative sign is just there to indicate decrement.

Therefore the percentage decrease is
45\%
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